There’s a weird belief out there that tech critics hate technology. But do movie critics hate movies? Do food critics hate food? No! The most effective, insightful critics do what they do because they love something so deeply that they want to see it made even better. The most effective tech critics have had transformative, positive online experiences, and now unflinchingly call out the surveilled, commodified, enshittified landscape that exists today because they know there has been – and still can be – something better.

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(You can also find this episode on the Internet Archive and on YouTube.)

That’s what drives Molly White’s work. Her criticism of the cryptocurrency and technology industries stems from her conviction that technology should serve human needs rather than mere profits. Whether it’s blockchain or artificial intelligence, she’s interested in making sure the “next big thing” lives up to its hype, and more importantly, to the ideals of participation and democratization that she experienced. She joins EFF’s Cindy Cohn and Jason Kelley to discuss working toward a human-centered internet that gives everyone a sense of control and interaction – open to all in the way that Wikipedia was (and still is) for her and so many others: not just as a static knowledge resource, but as something in which we can all participate. 

In this episode you’ll learn about:

• Why blockchain technology has built-in incentives for grift and speculation that overwhelm most of its positive uses
• How protecting open-source developers from legal overreach, including in the blockchain world, remains critical
• The vast difference between decentralization of power and decentralization of compute
• How Neopets and Wikipedia represent core internet values of community, collaboration, and creativity
• Why Wikipedia has been resilient against some of the rhetorical attacks that have bogged down media outlets, but remains vulnerable to certain economic and political pressures
• How the Fediverse and other decentralization and interoperability mechanisms provide hope for the kind of creative independence, self-expression, and social interactivity that everyone deserves  

Molly White is a researcher, software engineer, and writer who focuses on the cryptocurrency industry, blockchains, web3, and other tech in her independent publication, Citation Needed. She also runs the websites Web3 is Going Just Great, where she highlights examples of how cryptocurrencies, web3 projects, and the industry surrounding them are failing to live up to their promises, and Follow the Crypto, where she tracks cryptocurrency industry spending in U.S. elections. She has volunteered for more than 15 years with Wikipedia, where she serves as an administrator (under the name GorillaWarfare) and functionary, and previously served three terms on the Arbitration Committee. She’s regularly quoted or bylined in news media, speaks at major conferences including South by Southwest and Web Summit; guest lectures at universities including Harvard, MIT, and Stanford; and advises policymakers and regulators around the world. 

Resources:

• XOXO Festival, Portland, OR: "Molly White: Fighting For Our Web" (Aug. 24, 2024)
• This Next Thing 2024, Pontresina, Switzerland: “Molly White: Magic, Creativity, and Meaning” (June 2024)
• EFF: Blockchain
• EFF: “Decentralization Reaches a Turning Point: 2024 in Review” (Jan. 1, 2025)
• Neopets
• Wikipedia 

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Transcript

MOLLY WHITE: I was very young when I started editing Wikipedia. I was like 12 years old, and when it said the encyclopedia that anyone can edit, “anyone” means me, and so I just sort of started contributing to articles and quickly discovered that there was this whole world behind Wikipedia that a lot of us really don't see, where very passionate people are contributing to creating a repository of knowledge that anyone can access.
And I thought, I immediately was like, that's brilliant, that's amazing. And you know that motivation has really stuck with me since then, just sort of the belief in open knowledge and open access I think has, you know, it was very early for me to be introduced to those things and I, I sort of stuck with it, because it became, I think, such a formative part of my life.

CINDY COHN: That’s Molly White talking about a moment that is hopefully relatable to lots of folks who think critically about technology – that moment when you first experienced how, sometimes, the internet can feel like magic.
I'm Cindy Cohn, the Executive Director of the Electronic Frontier Foundation.

JASON KELLEY: And I'm Jason Kelley, EFF’s Activism Director. This is our podcast, How to Fix the Internet.

CINDY COHN: The idea behind this show is that we're trying to make our digital lives BETTER. A big part of our job at EFF is to envision the ways things can go wrong online-- and jumping into action to help when things then DO go wrong.
But this show is about optimism, hope and solutions – we want to share visions of what it looks like when we get it right.

JASON KELLEY: Our guest today is Molly White. She’s a journalist and web engineer, and is one of the strongest voices thinking and speaking critically about technology–specifically, she’s been an essential voice on cryptocurrency and what people often call Web3–usually a reference to blockchain technologies.. She runs an independent online newsletter called Citation Needed, and at her somewhat sarcastically named website “Web3 is going just great” she chronicles all the latest, often alarming, news, often involving scams and schemes that make those of us working to improve the internet pull our hair out.

CINDY COHN: But she’s not a pessimist. She comes from a deep love of the internet, but is also someone who holds the people that are building our digital world to account, with clear-eyed explanations of where things are going wrong, but also potential that exists if we can do it right. Welcome, Molly. Thanks for being here.

MOLLY WHITE: Thank you for having me.

CINDY COHN: So the theme of our show is what does it look like if we start to get things right in the digital world? Now you recognize, I believe, the value of blockchain technologies, what they could be.
But you bemoan how far we are from that right now. So let's start there. What does the world look like if we start to use the blockchain in a way that really lives up to its potential for making things better online?

MOLLY WHITE: I think that a lot of the early discussions about the potential of the blockchain were very starry-eyed and sort of utopian. Much in the way that early discussions of the internet were that way. You know, they promised that blockchains would somehow democratize everything we do on the internet, you know, make it more available to anyone who wanted to participate.
It would provide financial rails that were more equitable and had fewer rent seekers and intermediaries taking fees along the way. A lot of it was very compelling.
But I think as we've seen the blockchain industry, such as it is now, develop, we've seen that this technology brings with it a set of incentives that are incredibly challenging to grapple with. And it's made me wonder, honestly, whether blockchains can ever live up to the potential that they originally claimed, because those incentives have seemed to be so destructive that much of the time any promises of the technology are completely overshadowed by the negatives.

CINDY COHN: Yeah. So let's talk a little bit about those incentives, 'cause I think about that a lot as well. Where do you see those incentives popping up and what are they?

MOLLY WHITE: Well, any public blockchain has a token associated with it, which is the cryptocurrency that people are trading around, speculating on, you know, purchasing in hopes that the number will go up and they will make a profit. And in order to maintain the blockchain, you know, the actual system of records that is storing information or providing the foundation for some web platform, you need that cryptocurrency token.
But it means that whatever you're trying to do with the blockchain also has this auxiliary factor to it, which is the speculation on the cryptocurrency token.
And so time and time again, watching this industry and following projects, claiming that they will do wonderful, amazing things and use blockchains to accomplish those things, I've seen the goals of the projects get completely warped by the speculation on the token. And often the project's goals become overshadowed by attempts to just pump the price of the token, in often very inauthentic ways or in ways that are completely misaligned with the goals of the project. And that happens over and over and over again in the blockchain world.

JASON KELLEY: Have you seen that not happen with any project? Is there any project that you've said, wow, this is actually going well. It's like a perfect use of this technology, or because you focus on sort of the problems, is that just not something you've come across?

MOLLY WHITE: I think where things work well is when those incentives are perfectly aligned, which is to say that if there are projects that are solely focused on speculation, then the blockchain speculation works very well. Um, you know, and so we see people speculating on Bitcoin, for example, and, and they're not hoping necessarily that the Bitcoin ledger itself will do anything.
The same is true with meme coins. People are speculating on these tokens that have no purpose behind them besides, you know. Hoping that the price will go up. And in that case, you know, people sort of know what they're getting into and it can be lucrative for some people. And for the majority of people it's not, but you know, they sort of understand that going into it, or at least you would hope that they do.

CINDY COHN: I think of the blockchain as, you know, when they say this'll go down on your permanent record, this is the permanent record.

MOLLY WHITE: That’s usually a threat.

CINDY COHN: Yeah.

MOLLY WHITE: I try to point that out as well.

CINDY COHN: Now, you know, look, to be clear, we work with people who do international human rights work saving the records before a population gets destroyed in a way that that can't be destroyed by the people in power is, is, is one of the kind of classic things that you want a secure, permanent place to store stuff, um, happens. And so there's, you know, there's that piece. So where do you point people to when you're thinking about like, okay, what if you want a real permanent record, but you don't want all the dreck of the cryptocurrency blockchain world?

MOLLY WHITE: Well, it really depends on the project. And I really try to emphasize that because I think a lot of people in the tech world come at things somewhat backwards, especially when there is a lot of hype around a technology in the way that there was with blockchains and especially Web3.
And we saw a lot of people essentially saying, I wanna do something with a blockchain. Let me go find some problem I can solve using a blockchain, which is completely backwards to how most technologists are used to addressing problems, right? They're faced with a problem. They consider possible ways to solve it, and then they try to identify a technology that is best suited to solving that problem.
And so, you know, I try to encourage people to reverse the thinking back to the normal way of doing things where, sure, you might not get the marketing boosts that Web3 once brought in. And, you know, it certainly it was useful to attract investors for a while to have that attached to your project, but you will likely end up with a more sustainable product at the end of the day because you'll have something that works and is using technology that is well suited to the problem. And so, you know, when it comes to where would I direct people other than blockchains, it very much depends on their problem and, and the problem that they're trying to solve.
For example, if you don't need to worry about having a, a system that is maintained by a group of people who don't trust each other, which is the blockchain’s sort of stated purpose, then there are any number of databases that you can use that work in the more traditional manner where you rely on perhaps a group of trusted participants or a system like that.
If you're looking for a more distributed or decentralized solution, there are peer-to-peer technologies that are not blockchain based that allow this type of content sharing. And so, you know, like I said, it really just depends on the use case more than anything.

JASON KELLEY: Since you brought up decentralization, this is something we talk about a lot at EFF in different contexts, and I think a lot of people saw blockchain and heard decentralized and said, that sounds good.
We want less centralized power. But where do you see things like decentralization actually helping if this kind of Web3 tech isn't a place where it's necessarily useful or where the technology itself doesn't really solve a lot of the problems that people have said it would.

MOLLY WHITE: I think one of the biggest challenges with blockchains and decentralization is that when a lot of people talk about decentralization, they're talking about the decentralization of power, as you've just mentioned, and in the blockchain world, they're often talking about the decentralization of compute, which is not necessarily the same thing, and in some cases it very much different.

JASON KELLEY: If you can do a rug pull, it's not necessarily decentralized. Right?

MOLLY WHITE: Right. Or if you're running a blockchain and you're saying it's decentralized, but you run all of the validators or the miners for that blockchain, then you, you know, the computers may be physically located all over the world, or, you know, decentralized in that sort of sense. But you control all the power and so you do not have a truly decentralized system in that manner of speaking.
And I think a lot of marketing in the crypto world sort of relied on people not considering the difference between those two things, because there are a lot of crypto projects that, you know, use all of the buzzwords around decentralization and democratization and, you know, that type of thing that are very, very centralized, very similar to the traditional tech companies where, you know, all of Facebook servers may be located physically all around the world, but no one's under the. The impression that Facebook is a decentralized company. Right? And so I think that's really important to remember is that there's nothing about blockchain technology specifically that requires a blockchain project to be decentralized in terms of power.
It still requires very intentional decision making on the parts of the people who are running that project to decentralize the power and reduce the degree to which any one entity can control the network. And so I think that there is this issue where people sort of see blockchains and they think decentralized, and in reality you have to dig a lot deeper.

CINDY COHN: Yeah, EFF has participated in a couple of the sanctions cases and the prosecutions of people who have developed peace. Is of the blockchain world especially around mixers. TornadoCash is one that we participated in, and I think this is an area where we have a kind of similar view about the role of the open source community and kind of the average coder and when their responsibility should create liability and when they should be protected from liability.
And we've tried to continue to weigh in on these cases to make sure the courts don't overstep, right? Because the prosecution gets so mad. You're talking about a lot of money laundering and, and things like that, that the, you know, the prosecution just wants to throw the book at everybody who was ever involved in these kinds of things and trying to create this space where, you know, a coder who just participates in a GitHub developing some piece of code doesn't have a liability risk.
And I think you've thought about this as well, and I'm wondering, do you see the government overstepping and do you think it's right to continue to think about that, that overstepping?

MOLLY WHITE: Yeah, I mean, I think it's that those are the types of questions that are really important when it comes to tackling problems around blockchains and cryptocurrencies and the financial systems that are developing around these products.
Tou have to be really cautious that, you know, just because a bad thing is happening, you don't come in with a hammer that is, you know, much too big and start swinging it around and hitting sort of anyone in the vicinity because, you know, I think there are some things that should absolutely be protected, like, you know, writing software, for example.
A person who writes software should not necessarily be liable for everything that another person then goes and does with that software. And I think that's something that's been fairly well established through, you know, cryptography cases, for example, where people writing encryption algorithms and software to do strong encryption should not be considered liable for whatever anyone encrypts with that technology. We've seen it with virus writers, you know, it would be incredibly challenging for computer scientists to research and sort of think about new viruses and protect against vulnerabilities if they were not allowed to write that software.
But, you know, if they're not going and deploying this virus on the world or using it to, you know, do a ransomware attack, then they probably shouldn't be held liable for it. And so similar questions are coming up in these cryptocurrency cases or these cases around cryptocurrency mixers that are allowing people to anonymize their transactions in the crypto world more adequately.
And certainly that is heavily used in money laundering and in other criminal activities that are using cryptocurrencies. But simply writing the software to perform that anonymization is not itself, I think, a crime. Especially when there are many reasons you might want to anonymize your financial transactions that are otherwise publicly visible to anyone who wishes to see them, and, you know, can be linked to you if you are not cautious about your cryptocurrency addresses or if you publish them yourself.
And so, you know, I've tried to speak out about that a little bit because I think a lot of people see me as, you know, a critic of the cryptocurrency world and the blockchain world, and I think it should be banned or that anyone trading crypto should be put in jail or something like that, which is a very extreme interpretation of my beliefs and is, you know, absolutely not what I believe. I think that, you know, software engineers should be free to write software and then if someone takes that software and commits a crime with it, you know, that is where law enforcement should begin to investigate. Not at the, you know, the software developer's computer.

CINDY COHN: Yeah, I just think that's a really important point. I think it's easy, especially because there's so much fraud and scam and abuse in this space, to try to make sure that we're paying attention to where are we setting the liability rules because even if you don't like cryptocurrency or any of those kinds of things, like protecting anonymity is really important.
It's kind of a function of our times right now where people are either all one or all the other. And I really have appreciated, as you've kind of gone through this, thinking about a position that protects the things that we need to protect, even if we don't care about 'em in this context, because we might in another, and law of course, is kind of made up of things that get set in one context and then applied in another, while at the same time being, you know, kind of no holds barred, critical of the awful stuff that's going on in this world.

JASON KELLEY: Let’s take a quick moment to say thank you to our sponsor.
“How to Fix the Internet” is supported by The Alfred P. Sloan Foundation’s Program in Public Understanding of Science and Technology. Enriching people’s lives through a keener appreciation of our increasingly technological world and portraying the complex humanity of scientists, engineers, and mathematicians.
And now back to our conversation with Molly White

JASON KELLEY: Some of the technologies you're talking about when sort of separated out from, maybe, the hype or the negatives that have like, overtaken the story. Things like peer-to-peer file sharing, cryptography. I mean, even, let's say, being able to send money to someone, you know, with your phone, if you want to call it that, are pretty incredible at some level, you know?
And you gave a talk in October that was about a time that you felt like the web was magic and you brought up a, a website that I'm gonna pretend that I've never heard of, so you can explain it to me, called Neopets. And I just wanna, for the listeners, could you explain a little bit about what Neopets was and sort of how it helped inform you about the way you want the web to work and, and things like that?

MOLLY WHITE: Yeah, so Neopets was a kids game. When I was a kid, you could adopt these little cartoon pets and you could like feed them and change their colors and do things, you know, play little games with them.

JASON KELLEY: Like Tamagotchis a little bit,

MOLLY WHITE: a little bit. Yeah. Yeah. There was also this aspect to the website where you could edit your user page and you could create little webpages in your account that were, it was pretty freewheeling, you know, you could edit the CSS and the HTML and you could make your own little website essentially. And as a kid that was really my first exposure to the idea that the internet and these websites that I was seeing, you know, sort of for the first time were not necessarily a read-only operation. You know, I was used to playing maybe little games on the internet  whatever kids were doing on the internet at the time.
And Neopets was really my first realization that I could add things to the internet or change the way they looked or interact with it in a way that was, you know, very participatory. And that later sort of turned into editing Wikipedia and then writing software and then publishing my writing on the web.
And that was really magical for me because it sort of informed me about the platform that was in front of me and how powerful it was to be able to, you know, edit something, create something, and then the whole world could see it.

JASON KELLEY: There's a really common critique right now that young people are sort of learning only bad things online or like only overusing the internet. And I mean, first of all, I think that's obviously not true. You know, every circumstance is different, but do you see places where like the way you experienced the internet growing up are still happening for young people?

MOLLY WHITE: Yeah, I mean, I think a lot of those, as you mentioned, I think a lot of those critiques are very misguided and they miss a lot of the incredibly powerful and positive aspects of the internet. I mean, the fact that you can go look something up and learn something new in half a second, is revolutionary. But then I think there are participatory examples, much like what I was experiencing when I was younger. You know, people can still edit Wikipedia the way that I was doing as a kid. That is a very powerful thing to do when you're young, to realize that knowledge is not this thing that is handed down from on high from some faceless expert who wrote history, but it's actually something that people are contributing to and improving constantly. And it can always be updated and improved and edited and shared, you know, in this sort of free and open way. I think that is incredibly powerful and is still open to people of any age who are, you know, able to access the site.

JASON KELLEY: I think it's really important to bring up some of these examples because something I've been thinking about a lot lately as these critiques and attacks on young people using the internet have sort of grown and even, you know, entered the state and congressional level in terms of bills, is that a lot of the people making these critiques, I feel like never liked the internet to begin with. They don't see it as magic in the way that I think you do and that, you know, a lot of our listeners do.
And it's a view that is a problem specifically because I feel like you have to have loved the internet before you can hate it. You know, like, it's not like you need to really be able to critique the specific things rather than just sort of throw out the whole thing. And one of the things you know, I like about the work that you do is that you clearly have this love for technology and for the internet, and that lets you, I think, find the problems. And other people can't see through into those specific individual issues. And so they just wanna toss the whole thing.

MOLLY WHITE: I think that's really true. I think that, you know, I think there is this weird belief, especially around tech critics, that tech critics hate technology. It's so divorced from reality because, you don't see that in other worlds where, you know, art critics are never told that they just hate all art. I think most people understand that art critics love art and that's why they are critics.
But with technology critics, there's sort of this weird, you know, this perception of us as people who just hate technology, we wanna tear it all down when in reality, you know, I know a lot of tech critics and, and most of us, if not all of us, that I can think of come from a, you know, a background of loving technology often from a very young age, and it is because of that love and the want to see technology to continue to allow people to have those transformative experiences that we criticize it.
And that's, for some reason, just a hard thing, I think for some people to wrap their minds around.

JASON KELLEY: I want to talk a little bit more about Wikipedia, the whole sort of organization and what it stands for and what it does has been under attack a lot lately as well. Again, I think that, you know, it's a lot of people misunderstanding how it works and, and, um, you know, maybe finding some realistic critiques of the fact that, that, you know, it's individually edited, so there's going to be some bias in some places and things like that, and sort of extrapolating out when they have a good faith argument to this other place. So I'm wondering if you've thought about how to protect Wikipedia, how to talk about it. How you know your experience with it has made you understand how it works better than most people.
And also just generally, you know how it can be used as a model for the way that the internet should be or the way we can build a better internet.

MOLLY WHITE: I think this ties back a little bit to the decentralization topic where Wikipedia is not decentralized in the sense that, you know, there is one company or one nonprofit organization that controls all the servers. And so there is this sort of centralization of power in that sense. But it is very decentralized in the editing world where there is no editorial board that is vetting every edit to the site.
There are, you know, numerous editors that contribute to any one article and no one person has the final say. There are different language versions of Wikipedia that all operate somewhat independently. And because of that, I think it has been challenging for people to attack it successfully.
Certainly there have been no shortage of those attacks. Um, but you know, it's not a company that someone could buy out and take over in ways that we've seen, you know, for example Elon Musk do with Twitter. There is no sort of editorial board that can be targeted and sort of pressured to change the language on the site. And, you know, I think that has helped to make Wikipedia somewhat resilient in ways that we've seen news organizations or other media publications struggle with recently where, you know, they have faced pressure from their buyers. The, you know, the people who own those organizations to be sure.
They've faced, you know, threats from the government in some cases. And Wikipedia is structured somewhat differently that I think helps us remain more protected from those types of attacks. But, you know, I, I am cautious to note that, you know, there are still vulnerabilities.
The attacks on Wikipedia need to be vociferously opposed. And so we have to be very cautious about this because the incredible resource that Wikipedia is, is is something that doesn't just sort of happen in a vacuum, you know, outside of any individual's actions.
It requires constant support, constant participation, constant editing. And so, you know, it's certainly a model to look to in terms of how communities can organize and contribute to, um, you know, projects on the internet. But it's also something that has to be very carefully maintained.

CINDY COHN: Yeah, I mean, this is just a lesson for our times, right? You know, there isn't a magical tech that can protect against all attacks. And there isn't a magical, you know, nonprofit 501-C3 that can be resistant against all the attacks. And we're in a time where they're coming fast and furious against our friends at Wikimedia, along with a lot of other, other things.
And I think the impetus is on communities to show up and, and, you know, not just let these things slide or think that, you know, uh, the internet might be magic in some ways, but it's not magic in these ways. Like we have to show up and fight for them. Um, I wanted to ask you a little bit about, um, kind of big tech's embrace of AI.
Um, you've been critical of it. We've been critical of it as well in many ways. And, and I, I wanna hear kind of your concerns about it and, um, and, and kind of how you see AI’s, you know, role in a better world. But, you know, also think about the ways in which it's not working all that well right now.

MOLLY WHITE: I generally don't have this sort of hard and fast view of AI is good or AI is bad, but it really comes down to how that technology is being used. And I think the widespread use of AI in ways that exploit workers and creatives and those who have decided to publish something online for example, and did not expect for that publication to be used by big tech companies that are then profiting off of it, that is incredibly concerning. Um, as well as the ways that AI is marketed to people. Again, this sort of mirrors my criticism, surround the crypto industry, but a lot of the marketing around AI is incredibly misleading. Um, you know, they're making promises that are not born out in reality.
They are selling people a product that will lie to you, you know, that will tell you things that are inaccurate. So I have a lot of concerns around AI, especially as we've seen it being used in the broadest, and sort of by the largest companies. But you know, I also acknowledge that there are ways in which some of this technology has been incredibly useful. And so, you know, it is one of these things where it has to be viewed with nuance, I think, around the ways it's being developed, the ways it's being deployed, the ways it's being marketed.

CINDY COHN: Yeah, there is a, a kinda eerie familiarity around the hype around AI and the hype around crypto. That, it's just kind of weird. It feels like we're going through like a, you know, groundhog day. Like we're living through the, another hype cycle that feels like the last, I think, you know, for us at EFF, we're really, we, we've tried to focus a lot on governmental use of AI's systems and AI systems that are trying to predict human behavior, right?
The digital equivalent of phrenology right? You know, let us, let us do sentiment analysis on the things that you said, and that'll tell us whether you're about to be a criminal or, you know, the right person for the job. I think those are the places that we've really identified, um, as, you know, problematic on a number of levels. You know, number one, it, it doesn't work nearly as well as,

MOLLY WHITE: That is a major problem!

CINDY COHN: It seems like that ought to be number one. Right. And this, you know, especially spending your time in Wikipedia where you're really working hard to get it right. Right. And you see the kind of back and forth of the conversation. But the, the central thing about Wikipedia is it's trying to actually give you truthful information and then watching the world get washed over with these AI assistants that are really not at all focused on getting it right, you know, or really focused on predicting the next word or, or however that works, right. Like, um, it's gotta be kind of strange from where you sit, I suspect, to see this.

MOLLY WHITE: Yeah, it's, it's very frustrating. And, you know, I, I like to think we lived in a world at one time where people wanted to produce technology that helped people, technology that was accurate, technology that worked in the ways that they said it did. And it's been very weird to watch, especially over the last few years that sort of, uh, those goals degrade where, well, maybe it's okay if it gets things wrong a lot, you know, or maybe it's okay if it doesn't work the way that we've said it does or maybe never possibly can.
That's really frustrating to watch as someone who, again, loves technology and loves the possibilities of technology to then see people just sort of using technology to, to deliver things that are, you know, making things worse for people in many ways.

CINDY COHN: Yeah, so I wanna flip it around a little bit. You, like EFF, we kind of sometimes spend a lot of time in all the ways that things are broken, and how do you think about how to get to a place where things are not broken, or how do you even just keep focusing on a better place that we could get to?

MOLLY WHITE: Well, I've, like I said, you know, a lot of my criticism really comes down to the industries and the sort of exploitative practices of a lot of these companies in the tech world. And so to the extent possible, separating myself from those companies and from their control has been really powerful to sort of regain some of that independence that I once remembered the web enabling where, you know, if you had your own website, you know, you could kind of do anything you wanted. And you didn't have to stay within the 280 characters if you had an idea, you know, and you could publish, uh, you know, a video that was longer than 10 minutes long or, or whatever it might be.
So sort of returning to some of those ideals around creating my own spaces on the web where I have that level of creative freedom, and certainly freedom in other ways, has been very powerful. And then finding communities of people who believe in those same things. I've taken a lot of hope in the Fediverse and the communities that have emerged around those types of technologies and projects where, you know, they're saying maybe there is an alternative out there to, you know, highly centralized big tech, social media being what everyone thinks of as the web. Maybe we could create different spaces outside of that walled garden where we all have control over what we do and say, and who we interact with. And we set the terms on which we interact with people.
And sort of push away the, the belief that, you know, a tech company needs to control an algorithm to show you what it is that you want to see, when in reality, maybe you could make those decisions for yourself or choose the algorithm or, you know, design a system for yourself using the technologies that are available to everyone, but have been sort of walled in by a large or many of the large players in the web these days.

CINDY COHN: Thank you, Molly. Thank you very much for coming on and, and spending your time with us. We really appreciate the work that you're doing, um, and, and the way that you're able to boil down some pretty complicated situations into, you know, kind of smart and thoughtful ways of reflecting on them. So thank you.

MOLLY WHITE: Yeah. Thank you.

JASON KELLEY: It was really nice to talk to someone who has that enthusiasm for the internet. You know, I think all of our guests probably do, but when we brought up Neo pets, that excitement was palpable, and I hope we can find a way to get more of that enthusiasm back.
That's one of the things I'm taking away from that conversation was that more people need to be enthusiastic about using the internet and whatever that takes. What did you take away from chatting with Molly that we need to do differently Cindy?

CINDY COHN: Well, I think that the thing that made the enthusiasm pop in her voice was the idea that she could control things. That she was participating and, and participating not only in Neopets, but the participation on Wikipedia as well, right?
That she could be part of trying to make truth available to people and recognizing that truth in some ways isn't an endpoint, it's an evolving conversation among people to try to keep getting at getting it right.
That doesn't mean there isn't any truth, but it does mean that there is an open community of people who are working towards that end. And, you know, you hear that enthusiasm as well. It's, you know, the more you give in, the more you get out of the internet and trying to make that a more common experience of the internet that things aren't just handed to you or taught to you, but really it's a two-way street, that's where the enthusiasm came from for her, and I suspect for a lot of other people.

JASON KELLEY: Yeah, and what you're saying about truth, I think she sort of applies this in a lot of different ways. Even specific technologies, I think most people realize this, but you have to say it again and again, aren't necessarily right or wrong for everything. You know, AI isn't right or wrong for every scenario. It's sort of, things are always evolving. How we use them is evolving. Whether or not something is correct today doesn't mean it will be correct tomorrow. And there's just a sort of nuance and awareness that she had to how these different things work and when they make sense that I hope we can continue to see in more people instead of just a sort of, uh, flat across the board dislike of, you know, quote unquote the internet or quote unquote social media and things like that.

CINDY COHN: Yeah, or the other way around, like whatever it is, there's a hype cycle and it's just hyped over and over again. And that she's really charting a middle ground in the way she writes and talks about these things that I think is really important. I think the other thing I really liked was her framing of decentralization as thinking about decentralizing power, not decentralizing compute, and that difference being something that is often elided or not made clear.
But that can really help us see where, you know, where decentralization is happening in a way that's empowering people, making things better. You have to look for decentralized power, not just decentralized compute. I thought that was a really wise observation.

JASON KELLEY: And I think could be applied to so many other things where a term like decentralized may be used because it's accessible from everywhere or something like that. Right? And it's just, these terms have to be examined. And, and it sort of goes to her point about marketing, you know, you can't necessarily trust the way the newest fad is being described by its purveyors.
You have to really understand what it's doing at the deeper level, and that's the only way you can really determine if it's, if it's really decentralized, if it's really interoperable, if it's really, you know, whatever the new thing is. AI

CINDY COHN: Mm-hmm. Yeah, I think that's right. And you know, luckily for us, we have Molly who digs deep into the details of this for so many technologies, and I think we need to, you know, support and defend, all the people who are doing that. Kind of that kind of careful work for us, because we can't do all of it, you know, we're humans.
But having people who will do that for us in different places who are trusted and who aren't, you know who whose agenda is clear and understandable, that's kind of the best we can hope for. And the more of that we build and support and create spaces for on the, you know, uncontrolled open web as opposed to the controlled tech giants and walled gardens, as she said, I think the better off we'll be.

JASON KELLEY: Thanks for joining us for this episode of How to Fix the Internet.
If you have feedback or suggestions, we'd love to hear from you. Visit EFF dot org slash podcast and click on listener feedback. While you're there, you can become a member, donate, maybe even pick up some merch and just see what's happening in digital rights this week and every week.
Our theme music is by Nat Keefe of BeatMower with Reed Mathis
And How to Fix the Internet is supported by the Alfred P. Sloan Foundation's program in public understanding of science and technology.
We’ll see you next time.
I’m Jason Kelley…

CINDY COHN: And I’m Cindy Cohn.

MUSIC CREDITS: This podcast is licensed Creative Commons attribution 4.0 international and includes the following music licensed Creative Commons 3.0 unported by its creators: Drops of H2O, the filtered water treatment, by J. Lang. Additional beds by Gaetan Harris.

According to the American Road and Transportation Builders Association, one in three bridges needs repair or replacement, amounting to more than 200,000 bridges across the country. A key culprit of America’s aging infrastructure is rebar that has accumulated rust, which cracks the concrete around it, making bridges more likely to collapse.

Now Allium Engineering, founded by two MIT PhDs, is tripling the lifetime of bridges and other structures with a new technology that uses a stainless steel cladding to make rebar resilient to corrosion. By eliminating corrosion, infrastructure lasts much longer, fewer repairs are required, and carbon emissions are reduced. The company’s technology is easily integrated into existing steelmaking processes to make America’s infrastructure more resilient, affordable, and sustainable over the next century.

“Across the U.S., the typical bridge deck lasts about 30 years on average — we’re enabling 100-year lifetimes,” says Allium co-founder and CEO Steven Jepeal PhD ’21. “There’s a huge backlog of infrastructure that needs to be replaced, and that has frankly aged faster than it was expected to, largely because the materials we were using at the time weren’t cut out for the job. We’re trying to ride the momentum of rebuilding America’s infrastructure, but rebuild in a way that makes it last.”

To accomplish that, Allium adds a thin protective layer of stainless steel on top of traditional steel rebar to make it more resistant to corrosion. About 100,000 pounds of Allium’s stainless steel-clad rebar have already been used in construction projects around the U.S., and the company believes its process can be quickly scaled alongside steel mills.

“We integrate our system into mills so they don’t have to do anything differently,” says Jepeal, who co-founded Allium with Sam McAlpine PhD ’22. “We add everything we need to make a normal product into a stainless-clad product so that any mill out there can make a material that won’t corrode. That’s what needs to happen for all of the world’s infrastructure to be longer lasting.”

Toward better bridges

Jepeal completed his PhD in the MIT Department of Nuclear Science and Engineering (NSE) under Professor Zach Hartwig. During that time, he saw Hartwig and fellow NSE researchers spinout Commonwealth Fusion Systems to create the first commercial fusion reactors, which he says sparked his interest in startups.

“It definitely helped me catch the startup bug,” Jepeal says. “MIT is also where I got my materials science chops.”

McAlpine completed his PhD under Associate Professor Michael Short. In 2019, McAlpine and Short were working on an ARPA-E-funded project in which they would combine metals to improve corrosion-resistance in extreme environments.

Jepeal and McAlpine decided to start a company around applying a similar approach to improve the resilience of metals in everyday settings, working with MIT’s Venture Mentoring Service and speaking with Tata Steel, one of the largest steel makers in the world that has worked with the MIT Industrial Liaison Program (ILP). Members of Tata told the founders that one of their biggest problems was steel corrosion.

A key early problem the founders set out to solve was depositing corrosion-resistant material without adding significant costs or disrupting existing processes. Steelmaking traditionally begins by putting huge pieces of precursor steel through machines called rollers at extremely high temperatures to stretch out the material. Jepeal compares the process to making pasta on an industrial scale.

The founders decided to add their cladding before the rolling process. Although Allium’s system is customized, today the company makes use of existing pieces of equipment used in other metal processing applications, like welding, to add its cladding.

“We go into the mills and take big chunks of steel that are going through the steelmaking process but aren’t the end-product, and we deposit stainless steel on the outside of their cheap carbon steel, which is typically just recycled scrap from products like cars and fridges,” Jepeal says. “The treated steel then goes through the mill’s typical process for making end products like rebar.”

Each 40-foot piece of thick precursor steel turns into about a mile of rebar following the rolling process. Rebar treated by Allium is still more than 95 percent regular rebar and doesn’t need any special post-processing or handling.

“What comes out of the mill looks like regular rebar,” Jepeal says. “It is just as strong and can be bent, cut, and installed in all the same ways. But instead of being put into a bridge and lasting an average of 30 years, it will last 100 years or more.”

Infrastructure to last

Last year, Allium’s factory in Billerica, Massachusetts, began producing its first commercial cladding material, helping to manufacture about 100 tons of the company’s stainless steel-clad rebar in collaboration with a partner steel mill. That rebar has since been placed into construction projects in California and Florida.

Allium’s first facility has the capacity to produce about 1,000 tons of its long-lasting rebar each year, but the company is hoping to build more facilities closer to the steel mills it partners with, eventually integrating them into mill operations.

“Our mission of reducing emissions and improving this infrastructure is what’s driving us to scale very quickly to meet the needs of the industry,” Jepeal says. “Everyone we talk to wants this to be bigger than it is today.”

Allium is also experimenting with other cladding materials and composites. Down the line, Jepeal sees Allium’s tech being used for things beyond rebar like train tracks, steel beams, and pipes. But he stresses the company’s focus on rebar will keep it busy for the foreseeable future.

“Almost all of our infrastructure has this corrosion problem, so it’s the biggest problem we could imagine solving with our set of skills,” Jepeal says. “Tunnels, bridges, roads, industrial buildings, power plants, chemical factories — all of them have this problem.”

Nature Climate Change, Published online: 21 May 2025; doi:10.1038/s41558-025-02300-6

The authors combine horizontal and vertical climate velocities to understand how marine species shift in response to climate change. They show that vertical velocity, which is often overlooked, better explains climate responses, with implications for species adaptation and fishing resources.

On Wednesday, April 16, members of the MIT community gathered at the MIT Welcome Center to celebrate the annual IDEAS Social Innovation Challenge Showcase and Awards ceremony. Hosted by the Priscilla King Gray Public Service Center (PKG Center), the event celebrated 19 student-led teams who spent the spring semester developing and implementing solutions to complex social and environmental challenges, both locally and globally.

Founded in 2001, the IDEAS Challenge is an experiential learning incubator that prepares students to take their early-stage social enterprises to the next level. As the program approaches its 25th anniversary, IDEAS serves a vital role in the Institute’s innovation ecosystem — with a focus on social impact that encourages students across disciplines to think boldly, act compassionately, and engineer for change.

This year’s event featured keynote remarks by Amy Smith, co-founder of IDEAS and founder of D-Lab, who reflected on IDEAS’ legacy and the continued urgency of its mission. She emphasized the importance of community-centered design and celebrated the creativity and determination of the program’s participants over the years. 

“We saw the competition as a vehicle for MIT students to apply their technical skills to problems that they cared about, with impact and community engagement at the forefront,” Smith said. “I think that the goal of helping as many teams as possible along their journey has continued to this day.”

A legacy of impact and a vision for the future

Since its inception, the IDEAS Challenge has fueled over 1,200 ventures through training, mentorship, and seed funding; the program has also awarded more than $1.3 million to nearly 300 teams. Many of these have gone on to effect transformative change in the areas of global health, civic engagement, energy and the environment, education, and employment.  

Over the course of the spring semester, MIT student-led teams engage in a rigorous process of ideating, prototyping, and stakeholder engagement, supported by a robust series of workshops on the topics of systems change, social impact measurement, and social enterprise business models. Participants also benefit from mentorship, an expansive IDEAS alumni network, and connections with partners across MIT’s innovation ecosystem. 

“IDEAS continues to serve as a critical home to MIT students determined to meaningfully address complex systems challenges by building social enterprises that prioritize social impact and sustainability over profit,” said Lauren Tyger, the PKG Center’s assistant dean of social innovation, who has overseen the program since 2023. 

Voices of innovation

For many of this year’s participants, IDEAS offered the chance to turn their academic and professional experience into real-world impact. Blake Blaze, co-founder of SamWise, was inspired to design a platform that provides personalized education for incarcerated students after teaching classes in Boston-area jails and prisons in partnership with The Educational Justice Institute (TEJI) at MIT.

“Our team began the year motivated by a good idea, but IDEAS gave us the frameworks, mindset, and, more simply, the language to be effective collaborators with the communities we aim to serve,” said Blaze. “We learned that sometimes building technology for a customer requires more than product-market fit — it requires proper orientation for meaningful outcomes and impact.”

Franny Xi Wu, who co-founded China Dispossession Watch, a platform to document and raise awareness of grassroots anti-displacement activism in China, highlighted the niche space that IDEAS occupies within the entrepreneurship ecosystem. “IDEAS provided crucial support by helping us achieve federated, trust-based program rollout rather than rapid extractive scaling, pursue diversified funding aligned with community-driven incentives, and find like-minded collaborators equally invested in human rights and spatial justice.” 

A network of alumni and other volunteers play an invaluable mentorship role in IDEAS, fostering remarkable growth in their mentees over the course of the semester. 

“Engaging with mentors, judges, and peers profoundly validated our vision, reinforcing our confidence to pursue what initially felt like audacious goals,” said Xi Wu. “Their insightful feedback and genuine encouragement created a supportive environment that inspired and energized us. They also provided us valuable perspectives on how to effectively launch and scale social ventures, communicate compellingly with funders, and navigate the multifaceted challenges in impact entrepreneurship.”

“Being a PKG IDEAS mentor for the last two years has been an incredible experience. I have met a group of inspiring entrepreneurs trying to solve big problems, helped them on their journeys, and developed my own mentoring skills along the way,” said IDEAS mentor Dheera Ananthakrishnan SM ’90, EMBA ’23. “The PKG network is an incredible resource, a reinforcing loop, giving back so much more than it gets — I’m so proud to be a part of it. I look forward to seeing the impact of IDEAS teams as they continue on their journey, and I am excited to mentor and learn with the MIT PKG Center in the future.”

Top teams recognized with over $60K in awards

The 2025 IDEAS Challenge culminated with the announcement of this year’s winners. Teams were evaluated by a panel of expert judges representing a wide range of industries, and eight were selected to receive awards and additional mentorship that will jump-start their social innovations. These volunteer judges evaluated each proposal for innovation, feasibility, and potential for social impact. 

The showcase was not just a celebration of projects — it was a testament to the value of systems-driven design, collaborative problem-solving, and sustained engagement with community partners.

The 2025 grantees include:

• $20,000 award: SamWise is an AI-powered oral assessment tool that provides personalized education for incarcerated students, overcoming outdated testing methods. By leveraging large language models, it enhances learning engagement and accessibility.
• $15,000 award: China Dispossession Watch is developing a digital platform to document and raise awareness of grassroots anti-displacement activism and provide empirical analysis of forced expropriation and demolition in China.
• $10,000 award: Liberatory Computing is an educational framework that empowers African-American youth to use data science and AI to address systemic inequities.
• $7,500 Award: POLLEN is a purpose-driven card game and engagement framework designed to spark transnational conversations around climate change and disaster preparedness.
• $5,000 Award: Helix Carbon is transforming carbon conversion by producing electrolyzers with enhanced system lifetimes, enabling the onsite conversion of carbon dioxide into useful chemicals at industrial facilities.
• $2,000 Award: Forma Systems has developed a breakthrough in concrete floor design, using up to 72 percent less cement and 67 percent less steel, with the potential for significant environmental impact.
• $2,000 Award: Precisia empowers women with real-time, data-driven insights into their hormonal health through micro-needle patch technology, allowing them to make informed decisions about their well-being.
• $2,000 Award: BioBoost is experimenting with converting Caribbean sargassum seaweed waste into carbon-neutral energy using pyrolysis, addressing both the region's energy challenges and the environmental threat of seaweed accumulation.

Looking ahead: Supporting the next generation

As IDEAS nears its 25th anniversary, the PKG Center is launching a year-long celebration and campaign to ensure the program’s longevity and expand its reach. Christine Ortiz, the Morris Cohen Professor of Materials Science and Engineering, announced the IDEAS25 campaign during the event.

“Over the past quarter-century, close to 300 teams have launched projects through the support of IDEAS Awards, and several hundred more have entered the challenge — working on projects in over 60 countries,” Ortiz said. “IDEAS has supported student-led work that has had real-world impact across sectors and regions.”

In honor of the program’s 25th year, the PKG Center will measure the collective impact of IDEAS teams, showcase the work of alumni and partners at an Alumni Showcase this fall, and rally support to sustain the program for the next 25 years. 

“Whether you're a past team member, a mentor, a friend of IDEAS, or someone who just learned about the program tonight,” Ortiz said, “we invite you to join us. Let’s keep the momentum going together.”

One of the most profound open questions in modern physics is: “Is gravity quantum?” 

The other fundamental forces — electromagnetic, weak, and strong — have all been successfully described, but no complete and consistent quantum theory of gravity yet exists.  

“Theoretical physicists have proposed many possible scenarios, from gravity being inherently classical to fully quantum, but the debate remains unresolved because we’ve never had a clear way to test gravity’s quantum nature in the lab,” says Dongchel Shin, a PhD candidate in the MIT Department of Mechanical Engineering (MechE). “The key to answering this lies in preparing mechanical systems that are massive enough to feel gravity, yet quiet enough — quantum enough — to reveal how gravity interacts with them.”

Shin, who is also a MathWorks Fellow, researches quantum and precision metrology platforms that probe fundamental physics and are designed to pave the way for future industrial technology. He is the lead author of a new paper that demonstrates laser cooling of a centimeter-long torsional oscillator. The open-access paper, “Active laser cooling of a centimeter-scale torsional oscillator,” was recently published in the journal Optica. 

Lasers have been routinely employed to cool down atomic gases since the 1980s, and have been used in the linear motion of nanoscale mechanical oscillators since around 2010. The new paper presents the first time this technique has been extended to torsional oscillators, which are key to a worldwide effort to study gravity using these systems.

“Torsion pendulums have been classical tools for gravity research since [Henry] Cavendish’s famous experiment in 1798. They’ve been used to measure Newton’s gravitational constant, G, test the inverse-square law, and search for new gravitational phenomena,” explains Shin.

By using lasers to remove nearly all thermal motion from atoms, in recent decades scientists have created ultracold atomic gases at micro- and nanokelvin temperatures. These systems now power the world’s most precise clocks — optical lattice clocks — with timekeeping precision so high that they would gain or lose less than a second over the age of the universe.

“Historically, these two technologies developed separately — one in gravitational physics, the other in atomic and optical physics,” says Shin. “In our work, we bring them together. By applying laser cooling techniques originally developed for atoms to a centimeter-scale torsional oscillator, we try to bridge the classical and quantum worlds. This hybrid platform enables a new class of experiments — ones that could finally let us test whether gravity needs to be described by quantum theory.”

The new paper demonstrates laser cooling of a centimeter-scale torsional oscillator from room temperature to a temperature of 10 millikelvins (1/1,000th of a kelvin) using a mirrored optical lever.

“An optical lever is a simple but powerful measurement technique: You shine a laser onto a mirror, and even a tiny tilt of the mirror causes the reflected beam to shift noticeably on a detector. This magnifies small angular motions into easily measurable signals,” explains Shin, noting that while the premise is simple, the team faced challenges in practice. “The laser beam itself can jitter slightly due to air currents, vibrations, or imperfections in the optics. These jitters can falsely appear as motion of the mirror, limiting our ability to measure true physical signals.”

To overcome this, the team used the mirrored optical lever approach, which employs a second, mirrored version of the laser beam to cancel out the unwanted jitter.

“One beam interacts with the torsional oscillator, while the other reflects off a corner-cube mirror, reversing any jitter without picking up the oscillator’s motion,” Shin says. “When the two beams are combined at the detector, the real signal from the oscillator is preserved, and the false motion from [the] laser jitter is canceled.”

This approach reduced noise by a factor of a thousand, which allowed the researchers to detect motion with extreme precision, nearly 10 times better than the oscillator’s own quantum zero-point fluctuations. “That level of sensitivity made it possible for us to cool the system down to just 10 milli-kelvins using laser light,” Shin says.

Shin says this work is just the beginning. “While we’ve achieved quantum-limited precision below the zero-point motion of the oscillator, reaching the actual quantum ground state remains our next goal,” he says. “To do that, we’ll need to further strengthen the optical interaction — using an optical cavity that amplifies angular signals, or optical trapping strategies. These improvements could open the door to experiments where two such oscillators interact only through gravity, allowing us to directly test whether gravity is quantum or not.”

The paper’s other authors from the Department of Mechanical Engineering include Vivishek Sudhir, assistant professor of mechanical engineering and the Class of 1957 Career Development Professor, and PhD candidate Dylan Fife. Additional authors are Tina Heyward and Rajesh Menon of the Department of Electrical and Computer Engineering at the University of Utah. Shin and Fife are both members of Sudhir’s lab, the Quantum and Precision Measurements Group.

Shin says one thing he’s come to appreciate through this work is the breadth of the challenge the team is tackling. “Studying quantum aspects of gravity experimentally doesn’t just require deep understanding of physics — relativity, quantum mechanics — but also demands hands-on expertise in system design, nanofabrication, optics, control, and electronics,” he says.

“Having a background in mechanical engineering, which spans both the theoretical and practical aspects of physical systems, gave me the right perspective to navigate and contribute meaningfully across these diverse domains,” says Shin. “It’s been incredibly rewarding to see how this broad training can help tackle one of the most fundamental questions in science.”

Removing carbon dioxide from the atmosphere efficiently is often seen as a crucial need for combatting climate change, but systems for removing carbon dioxide suffer from a tradeoff. Chemical compounds that efficiently remove CO₂ from the air do not easily release it once captured, and compounds that release CO₂ efficiently are not very efficient at capturing it. Optimizing one part of the cycle tends to make the other part worse.

Now, using nanoscale filtering membranes, researchers at MIT have added a simple intermediate step that facilitates both parts of the cycle. The new approach could improve the efficiency of electrochemical carbon dioxide capture and release by six times and cut costs by at least 20 percent, they say.

The new findings are reported today in the journal ACS Energy Letters, in a paper by MIT doctoral students Simon Rufer, Tal Joseph, and Zara Aamer, and professor of mechanical engineering Kripa Varanasi.

“We need to think about scale from the get-go when it comes to carbon capture, as making a meaningful impact requires processing gigatons of CO₂,” says Varanasi. “Having this mindset helps us pinpoint critical bottlenecks and design innovative solutions with real potential for impact. That’s the driving force behind our work.”

Many carbon-capture systems work using chemicals called hydroxides, which readily combine with carbon dioxide to form carbonate. That carbonate is fed into an electrochemical cell, where the carbonate reacts with an acid to form water and release carbon dioxide. The process can take ordinary air with only about 400 parts per million of carbon dioxide and generate a stream of 100 percent pure carbon dioxide, which can then be used to make fuels or other products.

Both the capture and release steps operate in the same water-based solution, but the first step needs a solution with a high concentration of hydroxide ions, and the second step needs one high in carbonate ions. “You can see how these two steps are at odds,” says Varanasi. “These two systems are circulating the same sorbent back and forth. They’re operating on the exact same liquid. But because they need two different types of liquids to operate optimally, it’s impossible to operate both systems at their most efficient points.”

The team’s solution was to decouple the two parts of the system and introduce a third part in between. Essentially, after the hydroxide in the first step has been mostly chemically converted to carbonate, special nanofiltration membranes then separate ions in the solution based on their charge. Carbonate ions have a charge of 2, while hydroxide ions have a charge of 1. “The nanofiltration is able to separate these two pretty well,” Rufer says.

Once separated, the hydroxide ions are fed back to the absorption side of the system, while the carbonates are sent ahead to the electrochemical release stage. That way, both ends of the system can operate at their more efficient ranges. Varanasi explains that in the electrochemical release step, protons are being added to the carbonate to cause the conversion to carbon dioxide and water, but if hydroxide ions are also present, the protons will react with those ions instead, producing just water.

“If you don’t separate these hydroxides and carbonates,” Rufer says, “the way the system fails is you’ll add protons to hydroxide instead of carbonate, and so you’ll just be making water rather than extracting carbon dioxide. That’s where the efficiency is lost. Using nanofiltration to prevent this was something that we aren’t aware of anyone proposing before.”

Testing showed that the nanofiltration could separate the carbonate from the hydroxide solution with about 95 percent efficiency, validating the concept under realistic conditions, Rufer says. The next step was to assess how much of an effect this would have on the overall efficiency and economics of the process. They created a techno-economic model, incorporating electrochemical efficiency, voltage, absorption rate, capital costs, nanofiltration efficiency, and other factors.

The analysis showed that present systems cost at least $600 per ton of carbon dioxide captured, while with the nanofiltration component added, that drops to about $450 a ton. What’s more, the new system is much more stable, continuing to operate at high efficiency even under variations in the ion concentrations in the solution. “In the old system without nanofiltration, you’re sort of operating on a knife’s edge,” Rufer says; if the concentration varies even slightly in one direction or the other, efficiency drops off drastically. “But with our nanofiltration system, it kind of acts as a buffer where it becomes a lot more forgiving. You have a much broader operational regime, and you can achieve significantly lower costs.”

He adds that this approach could apply not only to the direct air capture systems they studied specifically, but also to point-source systems — which are attached directly to the emissions sources such as power plant emissions — or to the next stage of the process, converting captured carbon dioxide into useful products such as fuel or chemical feedstocks.  Those conversion processes, he says, “are also bottlenecked in this carbonate and hydroxide tradeoff.”

In addition, this technology could lead to safer alternative chemistries for carbon capture, Varanasi says. “A lot of these absorbents can at times be toxic, or damaging to the environment. By using a system like ours, you can improve the reaction rate, so you can choose chemistries that might not have the best absorption rate initially but can be improved to enable safety.”

Varanasi adds that “the really nice thing about this is we’ve been able to do this with what’s commercially available,” and with a system that can easily be retrofitted to existing carbon-capture installations. If the costs can be further brought down to about $200 a ton, it could be viable for widespread adoption. With ongoing work, he says, “we’re confident that we’ll have something that can become economically viable” and that will ultimately produce valuable, saleable products.

Rufer notes that even today, “people are buying carbon credits at a cost of over $500 per ton. So, at this cost we’re projecting, it is already commercially viable in that there are some buyers who are willing to pay that price.” But by bringing the price down further, that should increase the number of buyers who would consider buying the credit, he says. “It’s just a question of how widespread we can make it.” Recognizing this growing market demand, Varanasi says, “Our goal is to provide industry scalable, cost-effective, and reliable technologies and systems that enable them to directly meet their decarbonization targets.”

The research was supported by Shell International Exploration and Production Inc. through the MIT Energy Initiative, and the U.S. National Science Foundation, and made use of the facilities at MIT.nano.

A DoorDash driver stole over $2.5 million over several months:

The driver, Sayee Chaitainya Reddy Devagiri, placed expensive orders from a fraudulent customer account in the DoorDash app. Then, using DoorDash employee credentials, he manually assigned the orders to driver accounts he and the others involved had created. Devagiri would then mark the undelivered orders as complete and prompt DoorDash’s system to pay the driver accounts. Then he’d switch those same orders back to “in process” and do it all over again. Doing this “took less than five minutes, and was repeated hundreds of times for many of the orders,” writes the US Attorney’s Office...

An agency official said “everything has ground to a halt,” waiting for Commerce Secretary Howard Lutnick to review more than 200 agreements.

Governors, emergency managers and others from hurricane-prone states dominate the FEMA Review Council, which holds its first meeting Tuesday.

The California governor renamed his state’s cap-and-trade program last week. He got the new name from a former Washington state senator.

The National Highway Traffic Safety Administration declined to say exactly what the rule it submitted would do, although it does not appear to repeal Biden fuel economy standards directly.

Tools such as EPA's EJ Screen were removed from agency websites earlier this year, sparking an outcry from groups that rely on them to assess environmental risks to specific communities.

A big part of the reason why is that unlike damage from hurricane winds and wildfires, flood damage isn’t covered by standard home insurance.

The dragon's blood tree is a pillar of a Yemini island's ecosystem. Without intervention, scientists warn, these trees could disappear within a few centuries.

Carbon credits are popular among Australian companies looking to offset their climate footprint but have come under increasing scrutiny.

Petroperú said several companies were interested in the land parcel but withdrew at the last minute due to internal strategic shifts, not external pressure.

Measuring the density of a cell can reveal a great deal about the cell’s state. As cells proliferate, differentiate, or undergo cell death, they may gain or lose water and other molecules, which is revealed by changes in density.

Tracking these tiny changes in cells’ physical state is difficult to do at a large scale, especially with single-cell resolution, but a team of MIT researchers has now found a way to measure cell density quickly and accurately — measuring up to 30,000 cells in a single hour.

The researchers also showed that density changes could be used to make valuable predictions, including whether immune cells such as T cells have become activated to kill tumors, or whether tumor cells are susceptible to a specific drug.

“These predictions are all based on looking at very small changes in the physical properties of cells, which can tell you how they’re going to respond,” says Scott Manalis, the David H. Koch Professor of Engineering in the departments of Biological Engineering and Mechanical Engineering, and a member of the Koch Institute for Integrative Cancer Research.

Manalis is the senior author of the new study, which appears today in Nature Biomedical Engineering. The paper’s lead author is MIT Research Scientist Weida (Richard) Wu.

Measuring density

As cells enter new states, their molecular contents, including lipids, proteins, and nucleic acids, can become more or less crowded. Measuring the density of a cell offers an indirect view of this crowding.

The new density measurement technique reported in this study builds on work that Manalis’ lab has done over the past two decades on technologies for making measurements of cells and tiny particles. In 2007, his lab developed a microfluidic device known as a suspended microchannel resonator (SMR), which consists of a microchannel across a tiny silicon cantilever that vibrates at a specific frequency. As a cell passes through the channel, the frequency of the vibration changes slightly, and the magnitude of that change can be used to calculate the cell’s mass.

In 2011, the researchers adapted the technique to measure the density of cells. To achieve that, cells are sent through the device twice, suspended in two liquids of different densities. A cell’s buoyant mass (its mass as it floats in fluid) depends on its absolute mass and volume, so by measuring two different buoyant masses for a cell, its mass, volume, and density can be calculated.

That technique works well, but swapping fluids and flowing cells through each one is time-consuming, so it can only be used to measure a few hundred cells at a time.

To create a faster, more streamlined system, the researchers combined their SMR device with a fluorescent microscope, which enables measurements of cell volume. The microscope is positioned at the entrance to the resonator, and cells flow through the device while floating in a fluorescent dye that can’t be absorbed by cells. When cells pass by the microscope, the dip in the fluorescent signal can be used to determine the volume of the cell.

After that volume measurement is taken, the cells flow into the resonator, which measures their mass. This process, which allows for rapid calculation of density, can be used to measure up to 30,000 cells in an hour.

“Instead of trying to flow the cells back and forth at least twice through the cantilever to get cell density, we wanted to try to create a method to do a streamlined measurement, so the cells only need to pass through the cantilever once,” Wu says. “From a cell’s mass and volume, we can then derive its density, without compromising the throughput or the precision.”

Evaluating T cells

The researchers used their new technique to track what happens to the density of T cells after they are activated by signaling molecules.

As T cells transition from a quiescent state to an active state, they gain new molecules, as well as water, the researchers found. From their pre-activation state to the first day of activation, the densities of the cells dropped from an average of 1.08 grams per milliliter to 1.06 grams per milliliter. This means that the cells are becoming less crowded, as they gain water faster than they gain other molecules.

“This is suggesting that cell density is very likely reflecting an increase in cellular water content as the cells transit from a quiescent, non-proliferative state to a high-growth state,” Wu says. “These data are pointing to the notion that cell density is an interesting biomarker that is changing during T-cell activation and may have functional relevance to how well the T cells could proliferate.”

Travera, a clinical-stage company co-founded by Manalis, is working on using the SMR mass measurements to predict whether individual cancer patients’ T cells will respond to drugs meant to stimulate a strong anti-tumor immune response. The company has also begun using the density measurement technique, and preliminary studies have found that using mass and density measurements together gives a much more accurate prediction that using either one alone.

“Both mass and density are revealing something about the overall fitness of the immune cells,” Manalis says.

Using physical measurements of cells to monitor their immune activation “is very exciting and may offer a new way of evaluating and measuring changes in immune cells in circulation,” says Genevieve Boland, an associate professor of surgery at Harvard Medical School and vice chair of research for the Integrated Department of Surgery at Mass General Brigham, who was not involved in the study.

“This is a complementary, but very different, method than those currently used for immune assessments in cancer and other diseases, potentially offering a novel tool to assist in clinical decision-making regarding the need for and the choice of a specific cancer therapy, allow monitoring of response to therapy, and/or in early detection of side effects of immune-based therapies,” she says.

Making predictions

Another potential application for this approach is predicting how tumor cells will respond to different types of cancer drugs. In previous work, Manalis has shown that tracking changes in cell mass after treatment can predict whether a tumor cell is undergoing drug-induced apoptosis. In the new study, he found that density could also reveal these responses.

In those experiments, the researchers treated pancreatic cancer cells with one of two different drugs — one that the cells are susceptible to, and one they are resistant to. They found that density changes after treatment accurately reflected the cells’ known responses to treatment.

“We capture something about the cells that is highly predictive within the first couple of days after they get taken out from the tumor,” Wu says. “Cell density is a rapid biomarker to predict in vivo drug response in a very timely manner.”

Manalis’ lab is now working on using measurements of cell mass and density as a way to evaluate the fitness of cells used to synthesize complex proteins such as therapeutic antibodies.

“As cells are producing these proteins, we can learn from these markers of cell fitness and metabolic state to try to make predictions about how well these cells can produce these proteins, and hopefully in the future also guide design and control strategies to even further improve the yield of these complex proteins,” Wu says.

The research was funded by the Paul G. Allen Frontiers Group, the Virginia and Daniel K. Ludwig Fund for Cancer Research, the MIT Center for Precision Cancer Medicine, the Stand up to Cancer Convergence Program, Bristol Myers Squibb, and the Koch Institute Support (core) Grant from the National Cancer Institute.

By combining information from many large datasets, MIT researchers have identified several new potential targets for treating or preventing Alzheimer’s disease.

The study revealed genes and cellular pathways that haven’t been linked to Alzheimer’s before, including one involved in DNA repair. Identifying new drug targets is critical because many of the Alzheimer’s drugs that have been developed to this point haven’t been as successful as hoped.

Working with researchers at Harvard Medical School, the team used data from humans and fruit flies to identify cellular pathways linked to neurodegeneration. This allowed them to identify additional pathways that may be contributing to the development of Alzheimer’s.

“All the evidence that we have indicates that there are many different pathways involved in the progression of Alzheimer’s. It is multifactorial, and that may be why it’s been so hard to develop effective drugs,” says Ernest Fraenkel, the Grover M. Hermann Professor in Health Sciences and Technology in MIT’s Department of Biological Engineering and the senior author of the study. “We will need some kind of combination of treatments that hit different parts of this disease.”

Matthew Leventhal PhD ’25 is the lead author of the paper, which appears today in Nature Communications.

Alternative pathways

Over the past few decades, many studies have suggested that Alzheimer’s disease is caused by the buildup of amyloid plaques in the brain, which triggers a cascade of events that leads to neurodegeneration.

A handful of drugs have been developed to block or break down these plaques, but these drugs usually do not have a dramatic effect on disease progression. In hopes of identifying new drug targets, many scientists are now working on uncovering other mechanisms that might contribute to the development of Alzheimer’s.

“One possibility is that maybe there’s more than one cause of Alzheimer’s, and that even in a single person, there could be multiple contributing factors,” Fraenkel says. “So, even if the amyloid hypothesis is correct — and there are some people who don’t think it is — you need to know what those other factors are. And then if you can hit all the causes of the disease, you have a better chance of blocking and maybe even reversing some losses.”

To try to identify some of those other factors, Fraenkel’s lab teamed up with Mel Feany, a professor of pathology at Harvard Medical School and a geneticist specializing in fruit fly genetics.

Using fruit flies as a model, Feany and others in her lab did a screen in which they knocked out nearly every conserved gene expressed in fly neurons. Then, they measured whether each of these gene knockdowns had any effect on the age at which the flies develop neurodegeneration. This allowed them to identify about 200 genes that accelerate neurodegeneration.

Some of these were already linked to neurodegeneration, including genes for the amyloid precursor protein and for proteins called presenillins, which play a role in the formation of amyloid proteins.

The researchers then analyzed this data using network algorithms that Fraenkel’s lab has been developing over the past several years. These are algorithms that can identify connections between genes that may be involved in the same cellular pathways and functions.

In this case, the aim was to try to link the genes identified in the fruit fly screen with specific processes and cellular pathways that might contribute to neurodegeneration. To do that, the researchers combined the fruit fly data with several other datasets, including genomic data from postmortem tissue of Alzheimer’s patients.

The first stage of their analysis revealed that many of the genes identified in the fruit fly study also decline as humans age, suggesting that they may be involved in neurodegeneration in humans.

Network analysis

In the next phase of their study, the researchers incorporated additional data relevant to Alzheimer’s disease, including eQTL (expression quantitative trait locus) data — ­a measure of how different gene variants affect the expression levels of certain proteins.

Using their network optimization algorithms on this data, the researchers identified pathways that link genes to their potential role in Alzheimer’s development. The team chose two of those pathways to focus on in the new study.

The first is a pathway, not previously linked to Alzheimer’s disease, related to RNA modification. The network suggested that when one of two of the genes in this pathway — MEPCE and HNRNPA2B1 — are missing, neurons become more vulnerable to the Tau tangles that form in the brains of Alzheimer’s patients. The researchers confirmed this effect by knocking down those genes in studies of fruit flies and in human neurons derived from induced pluripotent stem cells (IPSCs).

The second pathway reported in this study is involved in DNA damage repair. This network includes two genes called NOTCH1 and CSNK2A1, which have been linked to Alzheimer’s before, but not in the context of DNA repair. Both genes are most well-known for their roles in regulating cell growth.

In this study, the researchers found evidence that when these genes are missing, DNA damage builds up in cells, through two different DNA-damaging pathways. Buildup of unrepaired DNA has previously been shown to lead to neurodegeneration.

Now that these targets have been identified, the researchers hope to collaborate with other labs to help explore whether drugs that target them could improve neuron health. Fraenkel and other researchers are working on using IPSCs from Alzheimer’s patients to generate neurons that could be used to evaluate such drugs.

“The search for Alzheimer’s drugs will get dramatically accelerated when there are very good, robust experimental systems,” he says. “We’re coming to a point where a couple of really innovative systems are coming together. One is better experimental models based on IPSCs, and the other one is computational models that allow us to integrate huge amounts of data. When those two mature at the same time, which is what we’re about to see, then I think we’ll have some breakthroughs.”

The research was funded by the National Institutes of Health.

The ocean is teeming with life. But unless you get up close, much of the marine world can easily remain unseen. That’s because water itself can act as an effective cloak: Light that shines through the ocean can bend, scatter, and quickly fade as it travels through the dense medium of water and reflects off the persistent haze of ocean particles. This makes it extremely challenging to capture the true color of objects in the ocean without imaging them at close range.

Now a team from MIT and the Woods Hole Oceanographic Institution (WHOI) has developed an image-analysis tool that cuts through the ocean’s optical effects and generates images of underwater environments that look as if the water had been drained away, revealing an ocean scene’s true colors. The team paired the color-correcting tool with a computational model that converts images of a scene into a three-dimensional underwater “world,” that can then be explored virtually.

The researchers have dubbed the new tool “SeaSplat,” in reference to both its underwater application and a method known as 3D gaussian splatting (3DGS), which takes images of a scene and stitches them together to generate a complete, three-dimensional representation that can be viewed in detail, from any perspective.

“With SeaSplat, it can model explicitly what the water is doing, and as a result it can in some ways remove the water, and produces better 3D models of an underwater scene,” says MIT graduate student Daniel Yang.

The researchers applied SeaSplat to images of the sea floor taken by divers and underwater vehicles, in various locations including the U.S. Virgin Islands. The method generated 3D “worlds” from the images that were truer and more vivid and varied in color, compared to previous methods.

The team says SeaSplat could help marine biologists monitor the health of certain ocean communities. For instance, as an underwater robot explores and takes pictures of a coral reef, SeaSplat would simultaneously process the images and render a true-color, 3D representation, that scientists could then virtually “fly” through, at their own pace and path, to inspect the underwater scene, for instance for signs of coral bleaching.

“Bleaching looks white from close up, but could appear blue and hazy from far away, and you might not be able to detect it,” says Yogesh Girdhar, an associate scientist at WHOI. “Coral bleaching, and different coral species, could be easier to detect with SeaSplat imagery, to get the true colors in the ocean.”

Girdhar and Yang will present a paper detailing SeaSplat at the IEEE International Conference on Robotics and Automation (ICRA). Their study co-author is John Leonard, professor of mechanical engineering at MIT.

Aquatic optics

In the ocean, the color and clarity of objects is distorted by the effects of light traveling through water. In recent years, researchers have developed color-correcting tools that aim to reproduce the true colors in the ocean. These efforts involved adapting tools that were developed originally for environments out of water, for instance to reveal the true color of features in foggy conditions. One recent work accurately reproduces true colors in the ocean, with an algorithm named “Sea-Thru,” though this method requires a huge amount of computational power, which makes its use in producing 3D scene models challenging.

In parallel, others have made advances in 3D gaussian splatting, with tools that seamlessly stitch images of a scene together, and intelligently fill in any gaps to create a whole, 3D version of the scene. These 3D worlds enable “novel view synthesis,” meaning that someone can view the generated 3D scene, not just from the perspective of the original images, but from any angle and distance.

But 3DGS has only successfully been applied to environments out of water. Efforts to adapt 3D reconstruction to underwater imagery have been hampered, mainly by two optical underwater effects: backscatter and attenuation. Backscatter occurs when light reflects off of tiny particles in the ocean, creating a veil-like haze. Attenuation is the phenomenon by which light of certain wavelengths attenuates, or fades with distance. In the ocean, for instance, red objects appear to fade more than blue objects when viewed from farther away.

Out of water, the color of objects appears more or less the same regardless of the angle or distance from which they are viewed. In water, however, color can quickly change and fade depending on one’s perspective. When 3DGS methods attempt to stitch underwater images into a cohesive 3D whole, they are unable to resolve objects due to aquatic backscatter and attenuation effects that distort the color of objects at different angles.

“One dream of underwater robotic vision that we have is: Imagine if you could remove all the water in the ocean. What would you see?” Leonard says.

A model swim

In their new work, Yang and his colleagues developed a color-correcting algorithm that accounts for the optical effects of backscatter and attenuation. The algorithm determines the degree to which every pixel in an image must have been distorted by backscatter and attenuation effects, and then essentially takes away those aquatic effects, and computes what the pixel’s true color must be.

Yang then worked the color-correcting algorithm into a 3D gaussian splatting model to create SeaSplat, which can quickly analyze underwater images of a scene and generate a true-color, 3D virtual version of the same scene that can be explored in detail from any angle and distance.

The team applied SeaSplat to multiple underwater scenes, including images taken in the Red Sea, in the Carribean off the coast of Curaçao, and the Pacific Ocean, near Panama. These images, which the team took from a pre-existing dataset, represent a range of ocean locations and water conditions. They also tested SeaSplat on images taken by a remote-controlled underwater robot in the U.S. Virgin Islands.

From the images of each ocean scene, SeaSplat generated a true-color 3D world that the researchers were able to virtually explore, for instance zooming in and out of a scene and viewing certain features from different perspectives. Even when viewing from different angles and distances, they found objects in every scene retained their true color, rather than fading as they would if viewed through the actual ocean.

“Once it generates a 3D model, a scientist can just ‘swim’ through the model as though they are scuba-diving, and look at things in high detail, with real color,” Yang says.

For now, the method requires hefty computing resources in the form of a desktop computer that would be too bulky to carry aboard an underwater robot. Still, SeaSplat could work for tethered operations, where a vehicle, tied to a ship, can explore and take images that can be sent up to a ship’s computer.

“This is the first approach that can very quickly build high-quality 3D models with accurate colors, underwater, and it can create them and render them fast,” Girdhar says. “That will help to quantify biodiversity, and assess the health of coral reef and other marine communities.”

This work was supported, in part, by the Investment in Science Fund at WHOI, and by the U.S. National Science Foundation.

The administration has reversed a stop work order that threatened to upend the 54-turbine offshore wind project in New York waters.