When farmers apply pesticides to their crops, 30 to 50 percent of the chemicals end up in the air or soil instead of on the plants. Now, a team of researchers from MIT and Singapore has developed a much more precise way to deliver substances to plants: tiny needles made of silk.

In a study published today in Nature Nanotechnology, the researchers developed a way to produce large amounts of these hollow silk microneedles. They used them to inject agrochemicals and nutrients into plants, and to monitor their health.

“There’s a big need to make agriculture more efficient,” says Benedetto Marelli, the study’s senior author and an associate professor of civil and environmental engineering at MIT. “Agrochemicals are important for supporting our food system, but they’re also expensive and bring environmental side effects, so there’s a big need to deliver them precisely.”

Yunteng Cao PhD ’22, currently a postdoc Yale University, and Doyoon Kim, a former postdoc in the Marelli lab, led the study, which included a collaboration with the Disruptive and Sustainable Technologies for Agricultural Precision (DiSTAP) interdisciplinary research group at the Singapore-MIT Alliance for Research and Technology (SMART).

In demonstrations, the team used the technique to give plants iron to treat a disease known as chlorosis, and to add vitamin B12 to tomato plants to make them more nutritious. The researchers also showed the microneedles could be used to monitor the quality of fluids flowing into plants and to detect when the surrounding soil contained heavy metals.

Overall, the researchers believe the microneedles could serve as a new kind of plant interface for real-time health monitoring and biofortification.

“These microneedles could be a tool for plant scientists so they can understand more about plant health and how they grow,” Marelli says. “But they can also be used to add value to crops, making them more resilient and possibly even increasing yields.”

The inner workings of plants

Accessing the inner tissues of living plants requires scientists to get through the plants’ waxy skin without causing too much stress. In previous work, the researchers used silk-based microneedles to deliver agrochemicals to plants in lab environments and to detect pH changes in living plants. But these initial efforts involved small payloads, limiting their applications in commercial agriculture.

“Microneedles were originally developed for the delivery of vaccines or other drugs in humans,” Marelli explains. “Now we’ve adapted it so that the technology can work with plants, but initially we could not deliver sufficient doses of agrochemicals and nutrients to mitigate stressors or enhance crop nutritional values.”

Hollow structures could increase the amount of chemicals microneedles can deliver, but Marelli says creating those structures at scale has historically required clean rooms and expensive facilities like the ones found inside the MIT.nano building.

For this study, Cao and Kim created a new way to manufacture hollow silk microneedles by combining silk fibroin protein with a salty solution inside tiny, cone-shaped molds. As water evaporated from the solution, the silk solidified into the mold while the salt forms crystalline structures inside the molds. When the salt was removed, it left behind in each needle a hollow structure or tiny pores, depending on the salt concentration and the separation of the organic and inorganic phases.

“It’s a pretty simple fabrication process. It can be done outside of a clean room — you could do it in your kitchen if you wanted,” Kim says. “It doesn’t require any expensive machinery.”

The researchers then tested their microneedles’ ability to deliver iron to iron-deficient tomato plants, which can cause a disease known as chlorosis. Chlorosis can decrease yields, but treating it by spraying crops is inefficient and can have environmental side effects. The researchers showed that their hollow microneedles could be used for the sustained delivery of iron without harming the plants.

The researchers also showed their microneedles could be used to fortify crops while they grow. Historically, crop fortification efforts have focused on minerals like zinc or iron, with vitamins only added after the food is harvested.

In each case, the researchers applied the microneedles to the stalks of plants by hand, but Marelli envisions equipping autonomous vehicles and other equipment already used in farms to automate and scale the process.

As part of the study, the researchers used microneedles to deliver vitamin B12, which is primarily found naturally in animal products, into the stalks of growing tomatoes, showing that vitamin B12 moved into the tomato fruits before harvest. The researchers propose their method could be used to fortify more plants with the vitamin.

Co-author Daisuke Urano, a plant scientist with DiSTAP, explains that “through a comprehensive assessment, we showed minimal adverse effects from microneedle injections in plants, with no observed short- or long-term negative impacts.”

“This new delivery mechanism opens up a lot of potential applications, so we wanted to do something nobody had done before,” Marelli explains.

Finally, the researchers explored the use of their microneedles to monitor the health of plants by studying tomatoes growing in hydroponic solutions contaminated with cadmium, a toxic metal commonly found in farms close to industrial and mining sites. They showed their microneedles absorbed the toxin within 15 minutes of being injected into the tomato stalks, offering a path to rapid detection.

Current advanced techniques for monitoring plant health, such as colorimetric and hyperspectral lead analyses, can only detect problems after plants growth is already being stunted. Other methods, such as sap sampling, can be too time-consuming.

Microneedles, in contrast, could be used to more easily collect sap for ongoing chemical analysis. For instance, the researchers showed they could monitor cadmium levels in tomatoes over the course of 18 hours.

A new platform for farming

The researchers believe the microneedles could be used to complement existing agricultural practices like spraying. The researchers also note the technology has applications beyond agriculture, such as in biomedical engineering.

“This new polymeric microneedle fabrication technique may also benefit research in microneedle-mediated transdermal and intradermal drug delivery and health monitoring,” Cao says.

For now, though, Marelli believes the microneedles offer a path to more precise, sustainable agriculture practices.

“We want to maximize the growth of plants without negatively affecting the health of the farm or the biodiversity of surrounding ecosystems,” Marelli says. “There shouldn’t be a trade-off between the agriculture industry and the environment. They should work together.”

This work was supported, in part, by the U.S. Office of Naval Research, the U.S. National Science Foundation, SMART, the National Research Foundation of Singapore, and the Singapore Prime Minister’s Office.

This is the second part of a three-part series about age verification in the European Union. In this blog post, we take a deep dive into the age verification app solicited by the European Commission, based on digital identities. Part one gives an overview of the political debate around age verification in the EU and part three explores measures to keep all users safe that do not require age checks. 

In  part one of this series on age verification in the European Union, we gave an overview of the state of the debate in the EU and introduced an age verification app, or mini-wallet, that the European Commission has commissioned. In this post, we will take a more detailed look at the app, how it will work and what some of its shortcomings are.

According to the original tender and the app’s recently published specifications, the Commission is soliciting the creation of a mobile application that will act as a digital wallet by storing a proof of age to enable users to verify their ages and access age-restricted content.

After downloading the app, a user would request proof of their age. For this crucial step, the Commission foresees users relying on a variety of age verification methods, including national eID schemes, physical ID cards (acknowledging that biometric analysis would be necessary for identifying a user corresponding to an ID), linking the app to another app that contains information about a user’s age, like a banking app, or age assessment through third parties like post offices. 

In the next step, the age verification app would generate a proof of age. Once the user would access a website restricting content for certain age cohorts, the platform would request proof of the user’s age through the app. The app would then present proof of the user’s age via the app, allowing online services to verify the age attestation and the user would then access age-restricted websites or content in question. The goal is to build an app that will be aligned and allows for integration with the architecture of the upcoming EU Digital Identity Wallet. 

The user journey of the European Commission's age verification app

Review of the Commission’s Specifications for an Age Verification Mini-ID Wallet 

According to the specifications for the app, interoperability, privacy and security are key concerns for the Commission in designing the main requirements of the app. It acknowledges that the development of the app is far from finished, but an interactive process, and that key areas require feedback from stakeholders across industry and civil society. 

The specifications consider important principles to ensure the security and privacy of users verifying their age through the app, including data minimization, unlinkability (to ensure that only the identifiers required for specific linkable transactions are disclosed), storage limitations, transparency and measures to secure user data and prevent the unauthorized interception of personal data. 

However, taking a closer look at the specifications, many of the mechanisms envisioned to protect users’ privacy are not necessary requirements, but optional. For example, the app  shall implement salted hashes and Zero Knowledge Proofs (ZKPs), but is not required to do so. Indeed, the app’s specifications seem to heavily rely on ZKPs, while simultaneously acknowledging that no compatible ZKP solution is currently available. This warrants a closer inspection of what ZKPs are and why they may not be the final answer to protecting users’ privacy in the context of age verification. 

A Closer Look at Zero Knowledge Proofs

Zero Knowledge Proofs provide a cryptographic way to not give something away, like your exact date of birth and age, while proving something about it. They can offer a “yes-or-no” claim (like above or below 18) to a verifier requiring a legal age threshold. Two properties of ZKPs are “soundness” and “zero knowledge.” Soundness is appealing to verifiers and to governments to make it hard for a prover to present forged information. Zero-Knowledge can be beneficial to the holder, because they don’t have to share explicit information, just the proof that said information exists. This is objectively more secure than uploading a picture of your ID  to multiple sites or applications, but it still requires an initial ID upload process as mentioned above for activation.

This scheme makes several questionable assumptions. First, that frequently used ZKPs will avoid privacy concerns, and second, that verifiers won’t combine this data with existing information, such as account data, profiles, or interests, for other purposes, such as advertising. The European Commission plans to test this assumption with extremely sensitive data: government-issued IDs. Though ZKPs are a better approach, this is a brand new system affecting millions of people, who will be asked to provide an age proof with potentially higher frequency than ever before. This rolls the dice with the resiliency of these privacy measures over time. Furthermore, not all ZKP systems are the same, and while there is  research about its use on mobile devices, this rush to implementation before the research matures puts all of the users at risk.

Who Can Ask for Proof of Your Age?

Regulation on verifiers (the service providers asking for age attestations) and what they can ask for is also just as important to limit a potential flood of verifiers that didn’t previously need age verification. This is especially true for non Know-Your-Customer (KYC) cases, in which service providers are not required to perform due diligence on their users. Equally important are rules that determine the consequences for when verifiers violate those regulations. Up until recently, the eIDAS framework, of which the technical implementation is still being negotiated, required registration certificates across all EU member states for verifiers. By forcing verifiers to register the data categories they intend to ask for, issues like illegal data requests were supposed to be mitigated. But now, this requirement has been rolled back again and the Commission’s planned mini-AV wallet will not require it in the beginning. Users will be asked to prove how old they are without the restraint on verifiers that protects from request abuse. Without verifier accountability, or at least industry-level data categories being given a determined scope, users are being asked to enter into an imbalanced relationship. An earlier mock-up gave some hope for  empowered selective disclosure, where a user could toggle giving discrete information on and off during the time of the verifier request. It would be more proactive to provide that setting to the holder in their wallet settings, before a request is made from a relying party.

Privacy tech is offered in this system as a concession to users forced to share information even more frequently, rather than as an additional way to bring equity in existing interactions with those who hold power, through mediating access to information, loans, jobs, and public benefits. Words mean things, and ZKPs are not the solution, but a part of one. Most ZKP systems are more focused on making proof and verification time more efficient than they are concerned with privacy itself. The result of the latest research with digital credentials are more privacy oriented ways to share information. But at this scale, we will need regulation and added measures on aggressive verification to complete the promise of better privacy for eID use.

Who Will Have Access to the Mini-ID Wallet, and Who Will Be Left Out?

Beyond its technical specifications, the proposed app raises a number of accessibility and participation issues. At its heart, the mini-ID wallet will rely on the verification of a user’s age through a proof of age. According to the tender, the wallet should support four methods for the issuance and proving of age of a user.

Different age verification methods foreseen by the app

The first options are national eID schemes, which is an obvious choice: Many Member States are currently working on (or have already notified) national eID schemes in the context of the eIDAS, Europe’s eID framework. The goal is to allow the mini-ID wallet to integrate with the eIDAS node operated by the European Commission to verify a user’s age. Although many Member States are working on national eID schemes, previous uptake of eIDs has been reluctant, and it's questionable whether an EU-wide rollout of eIDs will be successful. 

But even if an EU-wide roll out was achievable, many will not be able to participate. Those who are not in possession of ID cards, passports, residence permits, or documents like birth certificates will not be able to attain an eID and will be at risk of losing access to knowledge, information, and services. This is especially relevant for already marginalized groups like refugees or unhoused people who may lose access to critical resources. But also many children and teenagers will not be able to participate in eID schemes. There are no EU-wide rules on when children need to have government-issued IDs, and while some countries, like Germany, mandate that every citizen above the age of 16 possess an ID, others, like Sweden, don’t require their citizens to have an ID or passport. In most EU Member States, the minimum age at which children can apply for an ID without parental consent is 18. So even in cases where children and teenagers may have a legal option to get an ID, their parents might withhold consent, thereby making it impossible for a child to verify their age in order to access information or services online.

The second option are so-called smartcards, or physical eID cards, such as national ID cards, e-passports or other trustworthy physical eID cards. The same limitations as for eIDs apply. Additionally, the Commission’s tender suggests the mini-ID wallet will rely on biometric recognition software to compare a user to the physical ID card they are using to verify their age. This leads to a host of questions regarding the processing and storing of sensitive biometric data. A recent study by the National Institute of Standards and Technology compared different age estimation algorithms based on biometric data and found that certain ethnicities are still underrepresented in training data sets, thus exacerbating the risk age estimation systems of discriminating against people of color. The study also reports higher error rates for female faces compared to male faces and that overall accuracy is strongly influenced by factors people have no control over, including “sex, image quality, region-of-birth, age itself, and interactions between those factors.” Other studies on the accuracy of biometric recognition software have reported higher error rates for people with disabilities as well as trans and non-binary people. 

The third option foresees a procedure to allow for the verification of a user’s identity through institutions like a bank, a notary, or a citizen service center. It is encouraging that the Commission’s tender foresees an option for different, non-state institutions to verify a user’s age. But neither banks nor notary offices are especially accessible for people who are undocumented, unhoused, don’t speak a Member State’s official language, or are otherwise marginalized or discriminated against. Banks and notaries also often require a physical ID in order to verify a client’s identity, so the fundamental access issues outlined above persist.

Finally, the specification suggests that third party apps that already have verified a user's identity, like banking apps or mobile network operators, could provide age verification signals. In many European countries, however, showing an ID is a necessary prerequisite for opening a bank account, setting up a phone contract, or even buying a SIM card. 

In summary, none of the options the Commission considers to allow for proving someone’s age accounts for the obstacles faced by different marginalized groups, leaving potentially millions of people across the EU unable to access crucial services and information, thereby undermining their fundamental rights. 

The question of which institutions will be able to verify ages is only one dimension when considering the ramification of approaches like the mini-ID wallet for accessibility and participation. Although often forgotten in policy discussions, not everyone has access to a personal device. Age verification methods like the mini-ID wallet, which are device dependent, can be a real obstacle to people who share devices, or users who access the internet through libraries, schools, or internet cafés, which do not accommodate the use of personal age verification apps. The average number of devices per household has been  found to correlate strongly with income and education levels, further underscoring the point that it is often those who are already on the margins of society who are at risk of being left behind by age verification mandates based on digital identities. 

This is why we need to push back against age verification mandates. Not because child safety is not a concern – it is. But because age verification mandates risk undermining crucial access to digital services, eroding privacy and data protection, and limiting the freedom of expression. Instead, we must ensure that the internet remains a space where all voices can be heard, free from discrimination, and where we do not have to share sensitive personal data to access information and connect with each other.

This seems like an important advance in LLM security against prompt injection:

Google DeepMind has unveiled CaMeL (CApabilities for MachinE Learning), a new approach to stopping prompt-injection attacks that abandons the failed strategy of having AI models police themselves. Instead, CaMeL treats language models as fundamentally untrusted components within a secure software framework, creating clear boundaries between user commands and potentially malicious content.

[…]

To understand CaMeL, you need to understand that prompt injections happen when AI systems can’t distinguish between legitimate user commands and malicious instructions hidden in content they’re processing...

The move plunges the congressionally mandated report into disarray and raises questions about whether the president will fill the void with pseudoscience.

Climate nonprofits that say they are about to go out of business will have to wait as the court considers whether EPA can terminate $20 billion in awards.

A recent investigation found "no evidence" that FEMA under Joe Biden deliberately avoided helping homes in Florida that backed Donald Trump.

They include a veteran FEMA administrator and emergency management leaders in Florida and Texas.

The measure renewed concerns among carbon capture critics about the potential for CO2 leaks.

The U.S. Green Building Council is updating its standards to account for rising seas and other effects of higher temperatures.

The U.K. government wants to “take back control” of energy supply — but is it swapping one dependence for another?

They are tapping everything from fungus to sawdust to make more environmentally friendly fats and oils.

Some producing countries like the Philippines and Indonesia are considering export restrictions, while consumers are being urged to switch to alternatives.

When the Venice Biennale’s 19th International Architecture Exhibition launches on May 10, its guiding theme will be applying nimble, flexible intelligence to a demanding world — an ongoing focus of its curator, MIT faculty member Carlo Ratti.

The Biennale is the world’s most renowned exhibition of its kind, an international event whose subject matter shifts over time, with a new curator providing new focus every two years. This year, the Biennale’s formal theme is “Intelligens,” the Latin word behind “intelligence,” in English, and “intelligenza,” in Italian — a word that evokes both the exhibition’s international scope and the many ways humans learn, adapt, and create.

“Our title is ‘Intelligens. Natural, artificial, collective,’” notes Ratti, who is a professor of the practice of urban technologies and planning in the MIT School of Architecture and Planning. “One key point is how we can go beyond what people normally think about intelligence, whether in people or AI. In the built environment we deal with many types of feedback and need to leverage all types of intelligence to collect and use it all.”

That applies to the subject of climate change, as adaptation is an ongoing focal point for the design community, whether facing the need to rework structures or to develop new, resilient designs for cities and regions.

“I would emphasize how eager architects are today to play a big role in addressing the big crises we face on the planet we live in,” Ratti says. “Architecture is the only discipline to bring everybody together, because it means rethinking the built environment, the places we all live.”

He adds: “If you think about the fires in Los Angeles, or the floods in Valencia or Bangladesh, or the drought in Sicily, these are cases where architecture and design need to apply feedback and use intelligence.”

Not just sharing design, but creating it

The Venice Biennale is the leading event of its kind globally and one of the earliest: It started with art exhibitions in 1895 and later added biannual shows focused on other facets of culture. Since 1980, the Biennale of Architecture was held every two years, until the 2020 exhibition — curated by MIT’s Hashim Sarkis — was rescheduled to 2021 due to the Covid-19 pandemic. It is now continuing in odd-numbered years.

After its May 10 opening, this year’s exhibition runs until Nov. 23.

Ratti is a wide-ranging scholar, designer, and writer, and the long-running director of MIT’s Senseable City Lab, which has been on the leading edge of using data to understand cities as living systems.

Additionally, Ratti is a founding partner of the international design firm Carlo Ratti Associati. He graduated from the Politecnico di Torino and the École Nationale des Ponts et Chaussées in Paris, then earned his MPhil and PhD at Cambridge University. He has authored and co-authored hundeds of publications, including the books “Atlas of the Senseable City” (2023) and “The City of Tomorrow” (2016). Ratti’s work has been exhibited at the Venice Biennale, the Design Museum in Barcelona, the Science Museum in London, and the Museum of Modern Art in New York, among other venues.

In his role as curator of this year’s Biennale, Ratti adapted the traditional format to engage with some of the leading questions design faces. Ratti and the organizers created multiple forums to gather feedback about the exhibition’s possibilities, sifting through responses during the planning process.

Ratti has also publicly called this year’s Biennale a “living lab,” not just an exhibition, in accordance with the idea of learning from feedback and developing designs in response.

Back in 1895, Ratti notes, the Biennale was principally “a place to share existing knowledge, with artists and architectures coming together every two years. Today, and for a few decades, you can find almost anything in architecture and art immediately online. I think Biennales can not only be places where you share existing knowledge, but places where you create new knowledge.”

At this moment, he emphasizes, that will often mean listening to nature as we grapple with climate solutions. It also implies recognizing that nature itself inevitably responds to inputs, too.

In this vein, Ratti says, “Remember what the great architect Carlo Scarpa once said: ‘Between a tree and a house, choose the tree.’ I see that as a powerful call to learn from nature — a vast lab of trial and error, guided by feedback loops. Too often in the 20th century, architects believed they had the solution and simply needed to scale it up. The results? Frequently disastrous. Especially now, when adaptability is everything, I believe in a different approach: experimentation, feedback, iteration. That’s the spirit I hope defines this year’s Biennale.”

An MIT touch

This year, MIT will again have a robust presence at the Biennale, even beyond Ratti’s presence as curator. In the first place, he emphasizes, there is a strong team organizing the Biennale. That includes MIT graduate student Claire Gorman, who has taken a year out of her studies to serve as principal assistant to the Biennale curator.

Many of the Biennale’s projects, Gorman observes, “align ecology, technology, and culture in stunning illustrations of the fact that intelligence emerges from the complex behaviors of many parts working together. Visitors to the exhibition will discover robots and artisans collaborating alongside algae, 3D printers, ancient building practices, and new materials. … One of the strengths of the exhibition is that it includes participants who approach similar topics from different points of view.”

Overall, Gorman adds, “Our hope is that visitors will come away from the exhibition with a sense of optimism about the capacity of design fields to unite many forms of expertise.”

Numerous other Institute faculty and researchers are represented as well. For instance, Daniela Rus, head of MIT’s Computer Science and Artificial Intelligence Lab (CSAIL), has helped design an installation about using robotics in the restoration of ancient structures. And famed MIT computer scientist Tim Berners-Lee, creator of the World Wide Web, is participating in a Biennale event on intelligence.

“In choosing ‘Intelligens’ as the Venice Biennale theme, Carlo Ratti recognizes that our moment requires a holistic understanding of how different forms of intelligence — from social and ecological to computational and spatial — converge to shape our built environment,” Rus says. “The Biennale offers a timely platform to explore how architecture can mediate between these intelligences, creating buildings and cities that think with and for us.”

Even as the Biennale runs, there is also a separate exhibit in Venice showcasing MIT work in architecture and design. Running from May 10 through Nov. 23, at the Palazzo Diedo, the show, “The Next Earth: Computation, Crisis, Cosmology,” features the work of 40 faculty members in MIT’s Department of Architecture, along with entries from the think tank Antikythera.

Meanwhile, for the Biennale itself, the main exhibition hall, the Arsenale, is open, but other event spaces are being renovated. That means the organizers are using additional spaces in the city of Venice this year to showcase cutting-edge design work and installations.

“We’re turning Venice into a living lab — taking the Biennale beyond its usual borders,” Ratti says. “But there’s a bigger picture: Venice may be the world’s most fragile city, caught between rising seas and the crush of mass tourism. That’s why it could become a true laboratory for the future. Venice today could be a glimpse of the world tomorrow.” 

Nature Climate Change, Published online: 29 April 2025; doi:10.1038/s41558-025-02328-8

It has been argued that parts of the climate system can experience rapid changes and that such tipping can be anticipated by early warning signals. Here the authors discuss the limitations of such indicators and common pitfalls in their application.

Today the U.S. House of Representatives passed the TAKE IT DOWN Act, giving the powerful a dangerous new route to manipulate platforms into removing lawful speech that they simply don't like. President Trump himself has said that he would use the law to censor his critics. The bill passed the Senate in February, and it now heads to the president's desk. 

The takedown provision in TAKE IT DOWN applies to a much broader category of content—potentially any images involving intimate or sexual content—than the narrower NCII definitions found elsewhere in the bill. The takedown provision also lacks critical safeguards against frivolous or bad-faith takedown requests. Services will rely on automated filters, which are infamously blunt tools. They frequently flag legal content, from fair-use commentary to news reporting. The law’s tight time frame requires that apps and websites remove speech within 48 hours, rarely enough time to verify whether the speech is actually illegal. As a result, online service providers, particularly smaller ones, will likely choose to avoid the onerous legal risk by simply depublishing the speech rather than even attempting to verify it.

Congress is using the wrong approach to helping people whose intimate images are shared without their consent. TAKE IT DOWN pressures platforms to actively monitor speech, including speech that is presently encrypted. The law thus presents a huge threat to security and privacy online. While the bill is meant to address a serious problem, good intentions alone are not enough to make good policy. Lawmakers should be strengthening and enforcing existing legal protections for victims, rather than inventing new takedown regimes that are ripe for abuse. 

The speed with which new technologies hit the market is nothing compared to the speed with which talented researchers find creative ways to use them, train them, even turn them into things we can’t live without. One such researcher is MIT MAD Fellow Alexander Htet Kyaw, a graduate student pursuing dual master’s degrees in architectural studies in computation and in electrical engineering and computer science.

Kyaw takes technologies like artificial intelligence, augmented reality, and robotics, and combines them with gesture, speech, and object recognition to create human-AI workflows that have the potential to interact with our built environment, change how we shop, design complex structures, and make physical things.

One of his latest innovations is Curator AI, for which he and his MIT graduate student partners took first prize — $26,000 in OpenAI products and cash — at the MIT AI Conference’s AI Build: Generative Voice AI Solutions, a weeklong hackathon at MIT with final presentations held last fall in New York City. Working with Kyaw were Richa Gupta (architecture) and Bradley Bunch, Nidhish Sagar, and Michael Won — all from the MIT Department of Electrical Engineering and Computer Science (EECS).

Curator AI is designed to streamline online furniture shopping by providing context-aware product recommendations using AI and AR. The platform uses AR to take the dimensions of a room with locations of windows, doors, and existing furniture. Users can then speak to the software to describe what new furnishings they want, and the system will use a vision-language AI model to search for and display various options that match both the user’s prompts and the room’s visual characteristics.

“Shoppers can choose from the suggested options, visualize products in AR, and use natural language to ask for modifications to the search, making the furniture selection process more intuitive, efficient, and personalized,” Kyaw says. “The problem we’re trying to solve is that most people don’t know where to start when furnishing a room, so we developed Curator AI to provide smart, contextual recommendations based on what your room looks like.” Although Curator AI was developed for furniture shopping, it could be expanded for use in other markets.

Another example of Kyaw’s work is Estimate, a product that he and three other graduate students created during the MIT Sloan Product Tech Conference’s hackathon in March 2024. The focus of that competition was to help small businesses; Kyaw and team decided to base their work on a painting company in Cambridge that employs 10 people. Estimate uses AR and an object-recognition AI technology to take the exact measurements of a room and generate a detailed cost estimate for a renovation and/or paint job. It also leverages generative AI to display images of the room or rooms as they might look like after painting or renovating, and generates an invoice once the project is complete.

The team won that hackathon and $5,000 in cash. Kyaw’s teammates were Guillaume Allegre, May Khine, and Anna Mathy, all of whom graduated from MIT in 2024 with master’s degrees in business analytics.

In April, Kyaw will give a TedX talk at his alma mater, Cornell University, in which he’ll describe Curator AI, Estimate, and other projects that use AI, AR, and robotics to design and build things.

One of these projects is Unlog, for which Kyaw connected AR with gesture recognition to build a software that takes input from the touch of a fingertip on the surface of a material, or even in the air, to map the dimensions of building components. That’s how Unlog — a towering art sculpture made from ash logs that stands on the Cornell campus — came about.

Unlog represents the possibility that structures can be built directly from a whole log, rather than having the log travel to a lumber mill to be turned into planks or two-by-fours, then shipped to a wholesaler or retailer. It’s a good representation of Kyaw’s desire to use building materials in a more sustainable way. A paper on this work, “Gestural Recognition for Feedback-Based Mixed Reality Fabrication a Case Study of the UnLog Tower,” was published by Kyaw, Leslie Lok, Lawson Spencer, and Sasa Zivkovic in the Proceedings of the 5th International Conference on Computational Design and Robotic Fabrication, January 2024.

Another system Kyaw developed integrates physics simulation, gesture recognition, and AR to design active bending structures built with bamboo poles. Gesture recognition allows users to manipulate digital bamboo modules in AR, and the physics simulation is integrated to visualize how the bamboo bends and where to attach the bamboo poles in ways that create a stable structure. This work appeared in the Proceedings of the 41st Education and Research in Computer Aided Architectural Design in Europe, August 2023, as “Active Bending in Physics-Based Mixed Reality: The Design and Fabrication of a Reconfigurable Modular Bamboo System.”

Kyaw pitched a similar idea using bamboo modules to create deployable structures last year to MITdesignX, an MIT MAD program that selects promising startups and provides coaching and funding to launch them. Kyaw has since founded BendShelters to build the prefabricated, modular bamboo shelters and community spaces for refugees and displaced persons in Myanmar, his home country.

“Where I grew up, in Myanmar, I’ve seen a lot of day-to-day effects of climate change and extreme poverty,” Kyaw says. “There’s a huge refugee crisis in the country, and I want to think about how I can contribute back to my community.”

His work with BendShelters has been recognized by MIT Sandbox, PKG Social Innovation Challenge, and the Amazon Robotics’ Prize for Social Good.

At MIT, Kyaw is collaborating with Professor Neil Gershenfeld, director of the Center for Bits and Atoms, and PhD student Miana Smith to use speech recognition, 3D generative AI, and robotic arms to create a workflow that can build objects in an accessible, on-demand, and sustainable way. Kyaw holds bachelor’s degrees in architecture and computer science from Cornell. Last year, he was awarded an SJA Fellowship from the Steve Jobs Archive, which provides funding for projects at the intersection of technology and the arts. 

“I enjoy exploring different kinds of technologies to design and make things,” Kyaw says. “Being part of MAD has made me think about how all my work connects, and helped clarify my intentions. My research vision is to design and develop systems and products that enable natural interactions between humans, machines, and the world around us.” 

As demand grows for more powerful and efficient microelectronics systems, industry is turning to 3D integration — stacking chips on top of each other. This vertically layered architecture could allow high-performance processors, like those used for artificial intelligence, to be packaged closely with other highly specialized chips for communication or imaging. But technologists everywhere face a major challenge: how to prevent these stacks from overheating.

Now, MIT Lincoln Laboratory has developed a specialized chip to test and validate cooling solutions for packaged chip stacks. The chip dissipates extremely high power, mimicking high-performance logic chips, to generate heat through the silicon layer and in localized hot spots. Then, as cooling technologies are applied to the packaged stack, the chip measures temperature changes. When sandwiched in a stack, the chip will allow researchers to study how heat moves through stack layers and benchmark progress in keeping them cool. 

"If you have just a single chip, you can cool it from above or below. But if you start stacking several chips on top of each other, the heat has nowhere to escape. No cooling methods exist today that allow industry to stack multiples of these really high-performance chips," says Chenson Chen, who led the development of the chip with Ryan Keech, both of the laboratory’s Advanced Materials and Microsystems Group.

The benchmarking chip is now being used at HRL Laboratories, a research and development company co-owned by Boeing and General Motors, as they develop cooling systems for 3D heterogenous integrated (3DHI) systems. Heterogenous integration refers to the stacking of silicon chips with non-silicon chips, such as III-V semiconductors used in radio-frequency (RF) systems.   

"RF components can get very hot and run at very high powers — it adds an extra layer of complexity to 3D integration, which is why having this testing capability is so needed," Keech says.

The Defense Advanced Research Projects Agency (DARPA) funded the laboratory's development of the benchmarking chip to support the HRL program. All of this research stems from DARPA's Miniature Integrated Thermal Management Systems for 3D Heterogeneous Integration (Minitherms3D) program.

For the Department of Defense, 3DHI opens new opportunities for critical systems. For example, 3DHI could increase the range of radar and communication systems, enable the integration of advanced sensors on small platforms such as uncrewed aerial vehicles, or allow artificial intelligence data to be processed directly in fielded systems instead of remote data centers.

The test chip was developed through collaboration between circuit designers, electrical testing experts, and technicians in the laboratory's Microelectronics Laboratory. 

The chip serves two functions: generating heat and sensing temperature. To generate heat, the team designed circuits that could operate at very high power densities, in the kilowatts-per-square-centimeter range, comparable to the projected power demands of high-performance chips today and into the future. They also replicated the layout of circuits in those chips, allowing the test chip to serve as a realistic stand-in. 

"We adapted our existing silicon technology to essentially design chip-scale heaters," says Chen, who brings years of complex integration and chip design experience to the program. In the 2000s, he helped the laboratory pioneer the fabrication of two- and three-tier integrated circuits, leading early development of 3D integration.

The chip's heaters emulate both the background levels of heat within a stack and localized hot spots. Hot spots often occur in the most buried and inaccessible areas of a chip stack, making it difficult for 3D-chip developers to assess whether cooling schemes, such as microchannels delivering cold liquid, are reaching those spots and are effective enough.

That's where temperature-sensing elements come in. The chip is distributed with what Chen likens to "tiny thermometers" that read out the temperature in multiple locations across the chip as coolants are applied.

These thermometers are actually diodes, or switches that allow current to flow through a circuit as voltage is applied. As the diodes heat up, the current-to-voltage ratio changes. "We're able to check a diode's performance and know that it's 200 degrees C, or 100 degrees C, or 50 degrees C, for example," Keech says. "We thought creatively about how devices could fail from overheating, and then used those same properties to design useful measurement tools."

Chen and Keech — along with other design, fabrication, and electrical test experts across the laboratory — are now collaborating with HRL Laboratories researchers as they couple the chip with novel cooling technologies, and integrate those technologies into a 3DHI stack that could boost RF signal power. "We need to cool the heat equivalent of more than 190 laptop CPUs [central processing units], but in the size of a single CPU package," Christopher Roper, co-principal investigator at HRL, said in a recent press release announcing their program.

According to Keech, the rapid timeline for delivering the chip was a challenge overcome by teamwork through all phases of the chip's design, fabrication, test, and 3D heterogenous integration.

"Stacked architectures are considered the next frontier for microelectronics," he says. "We want to help the U.S. government get ahead in finding ways to integrate them effectively and enable the highest performance possible for these chips."

The laboratory team presented this work at the annual Government Microcircuit Applications and Critical Technology Conference (GOMACTech), held March 17-20.

To understand what drives disease progression in tissues, scientists need more than just a snapshot of cells in isolation — they need to see where the cells are, how they interact, and how that spatial organization shifts across disease states. A new computational method called MESA (Multiomics and Ecological Spatial Analysis), detailed in a study published in Nature Genetics, is helping researchers study diseased tissues in more meaningful ways.

The work details the results of a collaboration between researchers from MIT, Stanford University, Weill Cornell Medicine, the Ragon Institute of MGH, MIT, and Harvard, and the Broad Institute of MIT and Harvard, and was led by the Stanford team.

MESA brings an ecology-inspired lens to tissue analysis. It offers a pipeline to interpret spatial omics data — the product of cutting-edge technology that captures molecular information along with the location of cells in tissue samples. These data provide a high-resolution map of tissue “neighborhoods,” and MESA helps make sense of the structure of that map.

“By integrating approaches from traditionally distinct disciplines, MESA enables researchers to better appreciate how tissues are locally organized and how that organization changes in different disease contexts, powering new diagnostics and the identification of new targets for preventions and cures,” says Alex K. Shalek, the director of the Institute for Medical Engineering and Science (IMES), the J. W. Kieckhefer Professor in IMES and the Department of Chemistry, and an extramural member of the Koch Institute for Integrative Cancer Research at MIT, as well as an institute member of the Broad Institute and a member of the Ragon Institute.

“In ecology, people study biodiversity across regions — how animal species are distributed and interact,” explains Bokai Zhu, MIT postdoc and author on the study. “We realized we could apply those same ideas to cells in tissues. Instead of rabbits and snakes, we analyze T cells and B cells.”

By treating cell types like ecological species, MESA quantifies “biodiversity” within tissues and tracks how that diversity changes in disease. For example, in liver cancer samples, the method revealed zones where tumor cells consistently co-occurred with macrophages, suggesting these regions may drive unique disease outcomes.

“Our method reads tissues like ecosystems, uncovering cellular ‘hotspots’ that mark early signs of disease or treatment response,” Zhu adds. “This opens new possibilities for precision diagnostics and therapy design.”

MESA also offers another major advantage: It can computationally enrich tissue data without the need for more experiments. Using publicly available single-cell datasets, the tool transfers additional information — such as gene expression profiles — onto existing tissue samples. This approach deepens understanding of how spatial domains function, especially when comparing healthy and diseased tissue.

In tests across multiple datasets and tissue types, MESA uncovered spatial structures and key cell populations that were previously overlooked. It integrates different types of omics data, such as transcriptomics and proteomics, and builds a multilayered view of tissue architecture.

Currently available as a Python package, MESA is designed for academic and translational research. Although spatial omics is still too resource-intensive for routine in-hospital clinical use, the technology is gaining traction among pharmaceutical companies, particularly for drug trials where understanding tissue responses is critical.

“This is just the beginning,” says Zhu. “MESA opens the door to using ecological theory to unravel the spatial complexity of disease — and ultimately, to better predict and treat it.”

The company doesn’t keep logs, so couldn’t turn over data:

Windscribe, a globally used privacy-first VPN service, announced today that its founder, Yegor Sak, has been fully acquitted by a court in Athens, Greece, following a two-year legal battle in which Sak was personally charged in connection with an alleged internet offence by an unknown user of the service.

The case centred around a Windscribe-owned server in Finland that was allegedly used to breach a system in Greece. Greek authorities, in cooperation with INTERPOL, traced the IP address to Windscribe’s infrastructure and, unlike standard international procedures, proceeded to initiate criminal proceedings against Sak himself, rather than pursuing information through standard corporate channels...

Political Retribution for Telling the Truth Weakens the Entire Infosec Community and Threatens Our Democracy; Letter Remains Open for Further Sign-Ons

SAN FRANCISCO – The Trump Administration must cease its politically motivated investigation of former U.S. Cybersecurity and Infrastructure Security Agency Director Christopher Krebs, the Electronic Frontier Foundation (EFF) and dozens of prominent cybersecurity and election security experts urged in an open letter. 

The letter – signed by preeminent names from academia, civil society, and the private sector – notes that security researchers play a vital role in protecting our democracy, securing our elections, and building, testing, and safeguarding government infrastructure. 

“By placing Krebs and SentinelOne in the crosshairs, the President is signaling that cybersecurity professionals whose findings do not align with his narrative risk having their businesses and livelihoods subjected to spurious and retaliatory targeting, the same bullying tactic he has recently used against law firms,” EFF’s letter said. “As members of the cybersecurity profession and information security community, we counter with a strong stand in defense of our professional obligation to report truthful findings, even – and especially – when they do not fit the playbook of the powerful. And we stand with Chris Krebs for doing just that.” 

President Trump appointed Krebs as Director of the Cybersecurity and Infrastructure Security Agency in the U.S. Department of Homeland Security in November 2018, and then fired him in November 2020 after Krebs publicly contradicted Trump's false claims of widespread fraud in the 2020 presidential election. 

Trump issued a presidential memorandum on April 9 directing Attorney General Pam Bondi and Homeland Security Secretary Kristi Noem to investigate Krebs, and directing Bondi and Director of National Intelligence Tulsi Gabbard to revoke security clearances held by Krebs and the cybersecurity company for which he worked, SentinelOne.  EFF’s letter urges that both of these actions be reversed immediately. 

“An independent infosec community is fundamental to protecting our democracy, and to the profession itself,” EFF’s letter said. “It is only by allowing us to do our jobs and report truthfully on systems in an impartial and factual way without fear of political retribution that we can hope to secure those systems. We take this responsibility upon ourselves with the collective knowledge that if any one of us is targeted for our work hardening these systems, then we all can be. We must not let that happen. And united, we will not let that happen.” 

EFF also has filed friend-of-the-court briefs supporting four law firms targeted for retribution in Trump’s unconstitutional executive orders. 

For the letter in support of Krebs: https://www.eff.org/document/chris-krebs-support-letter-april-28-2025

To sign onto the letter: https://eff.org/r.uq1r 

Contact:  WilliamBudingtonSenior Staff Technologistbill@eff.org