Transistors, the building blocks of modern electronics, are typically made of silicon. Because it’s a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits that restrict how compact and energy-efficient a transistor can be.

MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could enable smaller, faster, and more energy-efficient circuits. The material’s magnetism strongly influences its electronic behavior, leading to more efficient control of the flow of electricity. 

The team used a novel magnetic material and an optimization process that reduces the material’s defects, which boosts the transistor’s performance.

The material’s unique magnetic properties also allow for transistors with built-in memory, which would simplify circuit design and unlock new applications for high-performance electronics.

“People have known about magnets for thousands of years, but there are very limited ways to incorporate magnetism into electronics. We have shown a new way to efficiently utilize magnetism that opens up a lot of possibilities for future applications and research,” says Chung-Tao Chou, an MIT graduate student in the departments of Electrical Engineering and Computer Science (EECS) and Physics, and co-lead author of a paper on this advance.

Chou is joined on the paper by co-lead author Eugene Park, a graduate student in the Department of Materials Science and Engineering (DMSE); Julian Klein, a DMSE research scientist; Josep Ingla-Aynes, a postdoc in the MIT Plasma Science and Fusion Center; Jagadeesh S. Moodera, a senior research scientist in the Department of Physics; and senior authors Frances Ross, TDK Professor in DMSE; and Luqiao Liu, an associate professor in EECS, and a member of the Research Laboratory of Electronics; as well as others at the University of Chemistry and Technology in Prague. The paper appears today in Physical Review Letters.

Overcoming the limits

In an electronic device, silicon semiconductor transistors act like tiny light switches that turn a circuit on and off, or amplify weak signals in a communication system. They do this using a small input voltage.

But a fundamental physical limit of silicon semiconductors prevents a transistor from operating below a certain voltage, which hinders its energy efficiency.

To make more efficient electronics, researchers have spent decades working toward magnetic transistors that utilize electron spin to control the flow of electricity. Electron spin is a fundamental property that enables electrons to behave like tiny magnets.

So far, scientists have mostly been limited to using certain magnetic materials. These lack the favorable electronic properties of semiconductors, constraining device performance.

“In this work, we combine magnetism and semiconductor physics to realize useful spintronic devices,” Liu says.

The researchers replace the silicon in the surface layer of a transistor with chromium sulfur bromide, a two-dimensional material that acts as a magnetic semiconductor.

Due to the material’s structure, researchers can switch between two magnetic states very cleanly. This makes it ideal for use in a transistor that smoothly switches between “on” and “off.”

“One of the biggest challenges we faced was finding the right material. We tried many other materials that didn’t work,” Chou says.

They discovered that changing these magnetic states modifies the material’s electronic properties, enabling low-energy operation. And unlike many other 2D materials, chromium sulfur bromide remains stable in air.

To make a transistor, the researchers pattern electrodes onto a silicon substrate, then carefully align and transfer the 2D material on top. They use tape to pick up a tiny piece of material, only a few tens of nanometers thick, and place it onto the substrate.

“A lot of researchers will use solvents or glue to do the transfer, but transistors require a very clean surface. We eliminate all those risks by simplifying this step,” Chou says.

Leveraging magnetism

This lack of contamination enables their device to outperform existing magnetic transistors. Most others can only create a weak magnetic effect, changing the flow of current by a few percent or less. Their new transistor can switch or amplify the electric current by a factor of 10.

They use an external magnetic field to change the magnetic state of the material, switching the transistor using significantly less energy than would usually be required.

The material also allows them to control the magnetic states with electric current. This is important because engineers cannot apply magnetic fields to individual transistors in an electronic device. They need to control each one electrically.

The material’s magnetic properties could also enable transistors with built-in memory, simplifying the design of logic or memory circuits.

A typical memory device has a magnetic cell to store information and a transistor to read it out. Their method can combine both into one magnetic transistor.

“Now, not only are transistors turning on and off, they are also remembering information. And because we can switch the transistor with greater magnitude, the signal is much stronger so we can read out the information faster, and in a much more reliable way,” Liu says.

Building on this demonstration, the researchers plan to further study the use of electrical current to control the device. They are also working to make their method scalable so they can fabricate arrays of transistors.

This research was supported, in part, by the Semiconductor Research Corporation, the U.S. Defense Advanced Research Projects Agency (DARPA), the U.S. National Science Foundation (NSF), the U.S. Department of Energy, the U.S. Army Research Office, and the Czech Ministry of Education, Youth, and Sports. The work was partially carried out at the MIT.nano facilities.

MIT Research Scientist Afreen Siddiqi ’99, SM ’01, PhD ’06; MIT professors Kathleen Thelen and Vinod Vaikuntanathan SM ’05, PhD ’09; as well as Kate Manne PhD ’11 are among 223 scientists, artists, and scholars awarded 2026 fellowships from the John Simon Guggenheim Memorial Foundation. Working across 55 disciplines, the fellows were selected from almost 5,000 applicants for “prior career achievement and exceptional promise.”

Each fellow receives a monetary stipend to pursue independent work at the highest level under “the freest possible conditions.” Since its founding in 1925, the Guggenheim Foundation has awarded nearly $450 million in fellowships to more than 19,000 fellows. This year, MIT faculty and staff were recognized in the categories of geography and environmental studies, political science, and computer science.

Afreen Siddiqi is a research scientist in the Engineering Systems Laboratory in the Department of Aeronautics and Astronautics. Her expertise is in the development of systems-theoretic analytical methods and quantitative modeling for technical systems in space and on Earth that need to operate and adapt in changing environments. Her work has focused on space exploration, satellite Earth observation for informing decisions, and critical infrastructure planning. She has served as a contributing author to the sixth assessment report of 2022 of the Intergovernmental Panel on Climate Change (IPCC) on implications of water, energy, and food interconnections for climate change adaptation. Her work has received teaching awards and fellowships including the Amelia Earhart Fellowship, Richard D. DuPont Fellowship, and the Rene H. Miller Prize in Systems Engineering.

Kathleen Thelen is the Ford International Professor of Political Science. Her work focuses on the political economy of the rich democracies, with a current emphasis on the study of American capitalism in comparative perspective. Her most recent book, “Attention Shoppers! American Retail Capitalism and the Origins of the Amazon Economy,” was published by Princeton University Press in 2025. Her awards include the Friedrich Schiedel-Award for Politics and Technology, the Aaron Wildavsky Enduring Contribution Prize, and the Michael Endres Research Prize (2019). She was elected to the American Academy of Arts and Sciences in 2015.

Vinod Vaikuntanathan is the Ford Foundation Professor of Engineering in the Department of Electrical Engineering and Computer Science. A principal investigator at the Computer Science and Artificial Intelligence Laboratory, his research focuses upon the foundations of cryptography and its applications to theoretical computer science at large. He is known for his work on fully homomorphic encryption (a powerful cryptographic primitive that enables complex computations on encrypted data), as well as lattice-based cryptography (which lays down a new mathematical foundation for cryptography in the post-quantum world). His awards include the Harold E. Edgerton Faculty Award, the Godel Prize, the Simons Investigator Award, the Distinguished Alumnus Award from Indian Institute of Technology Madras, a Best Paper Award from CRYPTO 2024, test of time awards from IEEE Symposium on Foundations of Computer Science and CRYPTO conferences, and he was named a MacVicar Faculty Fellow in 2024 and an International Association for Cryptologic Research Fellow in 2026.

Kate Manne, who earned her PhD in philosophy at MIT in 2011, is now a professor at Cornell University.

“Our new class of Guggenheim Fellows is representative of the world’s best thinkers, innovators, and creators in art, science, and scholarship,” says Edward Hirsch, award-winning poet and president of the Guggenheim Foundation. “As the foundation enters its second century and looks to the future, I feel confident that this new class of 223 individuals will do bold and inspiring work, undaunted by the challenges ahead. We are honored to support their visionary contributions.”

A dozen MIT students recently set out for Barcelona — not just to study climate resilience, but to experience it firsthand. As part of STS.S22 (How to Grow Resilient Futures: Regenerative Agriculture and Economies in Catalunya, Spain), an Independent Activities Period course taught by Kate Brown, the Thomas M. Siebel Distinguished Professor in the History of Science, they stepped beyond the classroom and into living systems of sustainability.

Offered as a Global Classroom through MIT International Science and Technology (MISTI), the course reimagined what learning could look like. Instead of working their way through a syllabus containing texts about sustainable farming and the power of cooperatives, Brown’s students got their hands dirty. 

In fact, quite literally: They visited local farms and slaughterhouses; prepped, cooked, and served a cooperative dinner to migrants; and constructed a working greenhouse. In the process, they built a lasting community and forged their own visions about sustainability and how they are compelled to confront climate change — as MIT students now, and eventually as alumni. 

“I wanted the students to think about alternatives to the notion of capitalist development, where the latest technology is seen as the solution to every social problem that emerges. I wanted them to see ways people are solving problems in a place like Barcelona, where communities and ecologies are centered as part of the solution,” Brown says.

Through Brown’s partnerships at the Barcelona Urban Research Institute and Research and Degrowth (R&D)  — and MISTI Spain’s infrastructure — the group of eight undergraduates and four graduate students had the opportunity to examine the historical roots of cooperative movements in the region while simultaneously experiencing today’s iteration of co-op work. 

Brown intentionally designed the three-week syllabus to push students beyond the classroom walls and get them face-to-face with local MISTI Spain collaborators from across the farming and ecology sectors. For example, the class met with Pino Delàs, a pig farmer who left the industrial system to start his own localized, cyclical operation, called Llavora, which supported community farming and generated significantly less waste. 

Rooted in community 

With more than a century of creating cooperatives — both workers and farms — Barcelona and its Catalan roots provided an ideal environment for the students to consider Brown’s questions through fieldwork rooted in community. 

Within their first week on the ground, they collaborated with volunteers at the Agora Squat. The small “pocket park” was initially slated to be developed into a luxury hotel, but a local group of 200 neighborhood residents came together to protest the plan, instead exercising their legal right to use the land, a caveat in Spanish law that allows neighbors to make a case for possessing land that isn’t being used productively. Now, the lush green square boasts a community kitchen and gardens. One night a week, volunteers provide dinner for upward of 60 recent North African migrants, using ingredients sourced from local fruiterias and shops that would have otherwise gone to waste at the close of business. 

On this particular Thursday, Brown’s students became nonprofit managers and chefs, but they also became community members themselves. In just a few hours from start to finish, the students had to source donated produce from the local vendors, come up with a recipe using what they’d gathered, and then prepare a meal in the rudimentary kitchen. “They received a lot of turnips and had to create a recipe to use them,” Brown says. In the end, a flavorful stew simmered in a massive metal pan over propane burners, brought alive with fresh chilies picked from the garden. 

“This was way outside some students’ comfort zones,” Brown says. Yet, that was exactly the point of the activity. By the end of the evening, the students discovered that sometimes the most profound educational moments take shape only after challenging the limits of learning. 

“Many of us do not consider ourselves chefs, so it was empowering to discover that, together, we had the capacity to create a nourishing meal for 70 people, with produce that would have otherwise gone to waste. This meal that we created on the spot, in combination with many of the other workshops during the program, was a strong reminder of how much agency each of us has to effect change within isolating and constraining systems, especially in community with like-minded individuals,” says Sonia Torres Rodriguez, a first-year PhD student in urban studies and planning.

Torres Rodriguez focuses her doctoral research on affordable and climate-resilient housing. She was drawn to the IAP program's exploration of innovative approaches to more equitably distributing the means of producing housing and food, and was excited to be learning in person in Spain. “Cooking together, admiring healthy regenerative soil, foraging, learning traditional methods to braid grass, installing mini solar panels, and hosting poetry circles, would have been impossible to replicate on Zoom,” she says. 

Calvin Macatantan, a senior in computer science and urban studies and planning, was initially drawn to the program because of his interest in resilient economies and how they support the communities they serve. Other than visiting family in the Philippines, he’d never left the United States before. He was especially moved by the group’s stay at La Bruguera, an eco-resort partnered with R&D that serves as a “living laboratory.” The cohort heard from local experts in regenerative agriculture, soil health, and low-tech agroforestry, alongside hands-on activities such as eco-art sessions, weaving lessons, and the rebuilding of a greenhouse. 

As part of a final project for the course, Macatantan and another student wrote and illustrated a children’s book that explains La Bruguera’s work by making the soil come to life as the main protagonist for young readers. 

Brown’s course pushed Sofia Espindola de La Mora to think more critically about everyday systems and their environmental impact. Originally from Puerto Rico, the first-year student has watched helplessly in recent years as climate change has increased the frequency and magnitude of natural disasters at home.

She came to MIT looking for answers and wanting to make a difference, and signed up for Brown’s course as part of that quest. “It was fascinating to see firsthand that the degrowth movement doesn’t mean slowing down is a bad thing, but instead that the constant striving for more is what has led us to many of the predicaments we now face as a society. It forced me to think about whether it would even be possible for me to sustain the life I have now using renewable energy,” Espindola de La Mora says. The course convinced her to focus her studies on climate system science and engineering. 

A climate context

Broadening students’ perspectives was a priority for Brown, whose research lies at the intersection of history, science, technology, and bio-politics. She’s known on campus for courses like STS.038 (Risky Business: Food Production, Environment, and Health). Her 2026 book, “Tiny Gardens Everywhere: The Past, Present and Future of the Self-Provisioning City,” examines urban systems, including gardens. 

When Brown was designing the Global Classroom — made possible through MISTI, with additional support from the MIT Energy Initiative — she centered a value she considers imperative in any course today: addressing climate and other human-driven environmental challenges.

“I’m focused on training students to approach these problems at the local level, so they see what happens when they’re working through communities, rather than prescribing to them something to scale all over the world,” Brown says.

That localized, individualized approach helped expand on what the students initially believed was possible, and compelled them to become part of the solution through their studies and in their professional lives. 

Since their return to campus, Brown’s students have continued to lean on one another and build community, one meal at a time. Many Tuesday nights, they come together to cook dinner, Barcelona squat style. Each individual brings their ingredients, and together they create a recipe that nourishes and sustains.  

“I was losing a lot of faith in the world before this trip,” Macatantan admits. “We’re constantly surrounded by consumption and the drive to do more. This experience helped me realize that I want to do something that impacts people. For me, that will look like research. I want to become an expert in a subject and become someone who can help communicate that knowledge to people who need it.” 

“MISTI Global Classrooms like this show what happens when learning extends beyond the MIT campus,” says Alicia Goldstein Raun, associate director of MISTI and managing director of the MIT-Spain Program at the Center for International Studies. “I was excited when Professor Brown approached me to help shape this new class, knowing it would resonate with students,” says Raun. “The students tackled global challenges like climate change and explored the degrowth movement while immersing themselves in Spanish communities and culture.”

For faculty interested in designing a MISTI Global Classroom, more information can be found here.

One of the central promises of open social media services is interoperability—the idea that wherever you personally decide to post doesn’t require others to be there just to follow what you have to say. Think of it like a radio broadcast: you want to reach people and don't care where they are or what device they're using. For example, in theory, a Bluesky user can follow someone on Mastodon or Threads without having to create a Mastodon or Threads account. But these systems are still a work in progress, and you might need to tweak a few things to get it working correctly.

Right now, broadcasting your message across social platforms can be a funky experience at best, deliberately broken up by oligopolists. The idea of the open web was baked into the internet via protocols like HTML and RSS that made it easy for anyone to visit a website or follow most blogs. The fact social media isn’t similarly open reflects an intentional choice to privatize the internet. 

Bridging and managing your posts so they’re viewable outside a singular source is part of the broader philosophy of POSSE, short for Post Own Site Syndicate Elsewhere (sometimes its Post Own Site, Share Everywhere). Instead of managing several accounts across different services, you post once to one primary site (which might be your personal website, or just one social media account), then set it up so it automatically publishes everywhere else. This way, it doesn’t matter where you or your audience is, and they're not walled off by account registration requirements. 

We’ll come back around to POSSE at the end of this post, but for now, let’s assume you just want your current main open social media account to actually have a chance to reach the most people it can. 

Why Post to the Open Social Web

Because the Fediverse and ATmosphere use different protocols, we need to use a third-party tool so accounts can communicate with each other. For that, we’ll need a bridge. As the name suggests, a bridge can connect one social media account to another, so you can post once and spread your message across several places. This isn’t just some niche concept: major blogging platforms like Wordpress and Ghost integrate posting to the Fediverse.

Bridging is an important facet of POSSE, but also something more people should consider, even if they don’t run their own websites. For example, if you don’t want to create a Threads account just to interact with your one friend who uses that platform, you shouldn’t have to. The good news is, you don’t. There are several bridging services, like Fedisky, RSS Parrot, and pinhole, but Bridgy Fed is currently the simplest to use, so we’ll focus on that. 

How to Post to Bluesky from Mastodon

From your Mastodon account (or other Fediverse account, for simplicity’s sake we’ll stick to Mastodon throughout), search for the username @bsky.brid.gy@bsky.brid.gy and follow that account. Once you do, the account will follow you back and you’ll be bridged and people can find you from their Bluesky account. You should also get a DM with your bridged username. If you don’t see the @bsky.brid.gy@bsky.brid.gy user when you search, your Mastodon instance may be blocking the bridging tool. 

Threads users who have enabled Fediverse sharing will be able to find you with your standard Mastodon username (ie, @your_user_name@mastodon.social), but if they haven’t enabled sharing, they will not be able to see your account. While this search is still a beta feature, you might find it easier to share the full URL, which would look like this: https://www.threads.net/fediverse_profile/@your_user_name@mastodon.social

People on Bluesky can find you by: Either searching for your Mastodon username, or if that doesn’t work, @your_user_name.instance.ap.brid.gy. For example, if your username is @eff@mastodon.social, it would appear as @eff.mastodon.social.ap.brid.gy.

An example of a Mastodon username from the Bluesky web client.

How to Post to Mastodon and Bluesky from Threads

Yes, Threads is technically on the Fediverse, and you can bridge your Threads account to Mastodon or Bluesky (unless you’re in Europe, where the feature is disabled), but it’s a different process than on Bluesky and Mastodon.

• Open Settings > Account > Fediverse Sharing and set the option to “On.” This will make your posts visible to Mastodon (or other Fediverse) users, and vice versa. 
• Once the Fediverse sharing is enabled, you’ll likely need to wait a week, then you can bridge to Bluesky. Search for and follow the @bsky.brid.gy@bsky.brid.gy account (it may take some digging to find it, but if that doesn’t work you can try visiting the profile page directly. 

People on Mastodon (or other Fediverse accounts) and Bluesky can find you by: Mastodon users can find you at, @your_threads_username@threads.net while Bluesky users will find you at, @your_threads_username.threads.net.ap.brid.gy (seriously, that will be the username). Note that some Mastodon instances may block Threads users entirely.

An example of a Threads username from the Mastodon web client.

An example of a Threads username from the Bluesky web client.

How to Post to Mastodon and Threads from Bluesky

From your Bluesky (or other ATProto) account, search for the username, “@ap.brid.gy” and follow that account. Once you do, the account will follow you back and you’ll be bridged, so people can follow you from Mastodon or other Fediverse accounts. You should also get a DM with your bridged username.

People on Mastodon (or other Fediverse account) and Threads can find you by: Your username will appear as @your_bluesky_username@bsky.brid.gy. For example, if your Bluesky username is @eff@bsky.social, it would appear as @eff.bksy.social@bsky.brid.gy.

An example of a Bluesky username from the Mastodon web client.

How to Post Everywhere from Your Own Website

You can bridge more than social media accounts. If you have your own website, you can bridge that too (as long as it supports microformats and webmention, or an Atom or RSS feed. If you have a blog, there’s a good chance you’re already good to go). When you do so, the bridged account will either post the full text (or image) of whatever you post to your personal site, or a link to that content,  depending on how your website is set up. You’ll also probably want to log into your Bridgy user page so you can manage the account. 

Where people can find your bridged account: Usually, a user can just search for your website’s URL on their decentralized social network of choice, or enter it on the Bridgy Fed page. But if that doesn’t work, they can try @yourdomain.com@web.brid.gy from Mastodon or @yourdomain.com.web.brid.gy from Bluesky.

An example of a bridged website username in the Mastodon web client.

How Your Account Username Looks on Each Platform

You’re Bound to Run Into Some Quirks

• Sometimes messages take a little while to crossover between networks, and sometimes they don't crossover at all.
• You can’t log into a bridged account like a regular account, but Bridgy Fed does provide some tools to see incoming notifications and recent activity in case they’re not coming through properly.
• ActivityPub and ATProto don’t have the same feature set, so you will have certain capabilities for one account you might not have in another. For example, you can edit posts on Mastodon, but not on Bluesky. If you edit a post that’s bridged from Mastodon to Bluesky, the Bluesky post will not be updated. 
• Replies can sometimes get lost, especially if the person (or people) replying to you doesn’t have sharing turned on.
• Ownership of accounts can get weird. For example, if you post to your own website and use a tool like Wordpress or Ghost for federation (more info below), you don’t necessarily get access to a “normal” social media account, with a standard login and password.
• And more! This is still a work in progress that has some technical quirks, but it’s improving all the time, and it’s best to keep telling yourself that troubleshooting is part of the fun.

Other Cool Stuff You Can Do

As mentioned up top, there’s a lot more you can do, and an increasing number of tools are making this process simpler. Bridgy Fed is one way to post to more places from a single account, but it’s far from the only way to do so. Here are just a few examples.

• Micro.blog is a paid service where you can blog from your own domain name, then post automatically to Mastodon, Bluesky, Threads, Tumblr, Nostr, LinkedIn, Medium, Pixelfed, and Flickr.
• Ghost is a blogging and newsletter platform that offers direct integration with the Fediverse, as well as support for Bluesky. Wordpress offers the option to join the Fediverse through a community plugin. Other newsletter platforms, like Buttondown, also have plans for federation. 
• Surf.social is a landing page and social media utility where you can show off all your various accounts (Federated or not). From the reader point of view, you can follow one publications numerous types of posts in one place. For example, 404 Media’s Surf.social feed includes its YouTube feed, podcast feed, and its journalist’s social media posts.
• If you think these new handles are a bit ugly, you can use a custom domain for Bluesky or fediverse account from your website. 

Of course, there are plenty of other tools, blogging platforms, and other utilities out there to help facilitate posting and bridging accounts, with new ones coming along every day. 

With proper support, time, and effort, eventually we will all be able to seamlessly interact across platforms, take our follows and followers to other services when a platform no longer suits our needs, and interact with a variety of web content regardless of what platform hosts it. Until then, we still need to do some DIY work, support the services we want to succeed, and push for more platforms and services to support federated protocols.

Someone pleaded guilty to secretly working for a ransomware gang as he negotiated ransomware payments for clients.

A first-of-its-kind conference that focused on phasing out fossil fuels now confronts the challenge of turning plans into policy.

The judge rejected the oil industry's argument that federal law bars the tribes from suing under state law.

The probe comes amid a legal push by cities, counties and states to hold fossil fuel companies financially accountable for climate change.

Administration officials say Tehran is days from crisis, but analysts see a slower squeeze with global price shocks already hitting U.S. consumers and reshaping the political fight.

The cash infusion comes at a time of uncertainty for climate tech startups as private and federal funding shrinks.

Advocates are trying to block fossil fuel projects in energy-hungry Asia by convincing insurers not to cover or invest in them.

Dangerous combinations of hurricanes, heat and drought are making fires more likely.

The soaring price of oil and gas has forced governments across the globe to rethink their energy security policies.

Silicon Ranch believes cattle-grazing is the next frontier in so-called agrivoltaics.

The controversy has embroiled buyers of the $7 billion in sustainable bonds the country has issued since 2022 across U.S. dollar, euro and yen markets.

There are other significant obstacles facing the construction, including ongoing negotiations between the Alberta and federal governments over a climate emissions framework.

The human brain remains one of the most fascinating and perplexing mysteries in medicine. Scientists still struggle to match neurological activity with brain function and detect problems early, slowing efforts to treat neurological disorders and other diseases.

Beacon Biosignals is working to make sense of the brain by monitoring its activity while people sleep. The company, which was founded by Jake Donoghue PhD ’19 and former MIT researcher Jarrett Revels, developed a lightweight headband that uses electroencephalogram (EEG) technology to measure brain activity while people enjoy their normal sleep routines at home. Those data are processed by machine-learning algorithms to monitor the effects of novel treatments, find new signs of disease progression, and create patient cohorts for clinical trials.

“There’s a step-change in what becomes possible when you remove the sleep lab and bring clinical-grade EEG into the home,” says Donoghue, who serves as Beacon’s CEO. “It turns sleep from a constrained, facility-based test into a scalable source of high-quality data for diagnostics, drug development, and longitudinal brain health.”

Beacon partners with pharmaceutical companies to accelerate its path to patients. The company’s FDA 510(k)-cleared medical device has already been used in over 40 clinical trials across the globe as part of studies aimed at treating conditions including major depressive disorder, schizophrenia, narcolepsy, idiopathic hypersomnia, Alzheimer’s disease, and Parkinson’s disease.

With each deployment, Beacon learns more about how the brain works — insights it is using to create a “foundation model” of the brain.

“It’s our belief that the dataset that’s going to transform brain health doesn’t exist yet — but we are rapidly creating it,” Donoghue says. “Our platform can characterize the heterogeneity of disease progression, generating dynamic insights that are impossible to fully capture through static modalities like sequencing or imaging. The brain is an electric organ and changes through synaptic plasticity, so tracking brain function across many diseases at scale will allow us to discover novel subgroups of diseases and map them over time.”

Illuminating the brain

Donoghue trained in the Harvard-MIT Program in Health Sciences and Technology, conducting clinical training for an MD while completing his PhD in neuroscience at MIT under the guidance of Earl Miller, MIT's Picower Professor in Brain and Cognitive Sciences and The Picower Institute for Learning and Memory. While in the program, Donoghue trained at Massachusetts General Hospital and Boston Children’s Hospital, where he helped care for patients, including in oncology, during the rise of genomic sequencing to guide precision cancer therapies. He later worked in neurology and psychiatry, where care often relied on more iterative approaches — highlighting an opportunity to bring similarly data-driven precision to brain health.

“What struck me most was the inability to measure brain function in the ways that cardiologists can longitudinally monitor cardiac function in patients from home,” Donoghue says. “At MIT, I built this conviction that processing a lot of brain data and working to correlate that with brain function would be transformative to how these neurological diseases are identified and treated.”

Toward the end of his training, Donoghue began developing his ideas further, engaging with mentors including HST and Harvard Medical School professors Sydney Cash and Brandon Westover. He had met Revels, who was working as a research software engineer in MIT’s Julia Lab, during his PhD, and convinced him to co-found Beacon with him in 2019.

“We decided building a business to understand the organ of interest — the brain — would be a great start to understanding heterogeneous neuropsychiatric diseases and building better treatments,” Donoghue recalls.

Beacon began as a computation and analytics company building wearable devices to expand clinical impact and reach. From its early days, Beacon has been partnering with large pharmaceutical companies running clinical trials, offering a less invasive way to watch brain activity and learn how their drugs are impacting the brain as well as how patients sleep.

“It was clear sleep was the right window to understand the brain,” Donoghue says. “Neural activity during sleep can be an order of magnitude higher and more structured, almost like a language. It’s a great surface area for understanding brain function and how different drugs affect the brain.”

Donoghue says Beacon’s devices can collect lab-grade data on each patient for multiple sequential nights, resulting in higher quality assessment. The company uses machine learning to extract insights, such as the time patients spend in different sleep stages and the number of small awakenings that occur throughout the night. It can also detect subtle sleep architecture changes that might lead to cognitive decline.

“We’re starting to take features of sleep activity and link them to outcomes in a way that’s never been done with this level of precision,” Donoghue says.

To date, Beacon has taken part in clinical trials for sleep and psychiatric disorders as well as neurodegenerative diseases, where sleep changes can emerge years before the presentation of symptoms.

“We do a lot of work in areas like Alzheimer’s disease and Parkinson’s, which affected my grandfather,” Donoghue says. “We’re analyzing features of rapid-eye-movement and slow-wave sleep to detect early changes that precede clinical symptoms. It’s an opportunity to move these diseases from late recognition to much earlier, data-driven detection.”

Improving brain treatments for millions

Last year, Beacon acquired an at-home sleep apnea testing company that serves more than 100,000 patients each year across the U.S., accelerating access to high-quality, comprehensive testing in the home and expanding the reach of its platform. Then in November, the company raised $97 million to accelerate that expansion.

“The vision has always been to reach patients and help people at scale,” Donoghue says. “What’s powerful is that we’re building a longitudinal record of brain function over time,” Donoghue says. “A patient might come in for sleep apnea screening, but if they develop Parkinson’s years later, that earlier data becomes a window into the disease before symptoms emerged. That turns routine testing into a foundation for entirely new prognostic biomarkers — and a path to detecting and intervening in brain disease earlier, potentially before symptoms ever begin.”

Nature Climate Change, Published online: 01 May 2026; doi:10.1038/s41558-026-02628-7

Addressing non-CO2 greenhouse gases alongside CO2 is essential for climate mitigation, but distributional effects remain a major concern. Now a study shows that when climate policy extends beyond CO2, the resulting costs are unevenly distributed across households worldwide.

Nature Climate Change, Published online: 01 May 2026; doi:10.1038/s41558-026-02622-z

In response to the large contribution of non-CO2 GHG to global warming, pricing of their emissions has been proposed as a cost-effective mitigation option. The authors find that such multi-GHG pricing can be more regressive than CO2-only pricing, with a relative increase in burden for low-income households.

For the last couple of years, we’ve watched the same predictable cycle play out across the globe: a state (or country) passes a clunky age-verification mandate, and, without fail, Virtual Private Network (VPN) usage surges as residents scramble to maintain their privacy and anonymity. We've seen this everywhere—from states like Florida, Missouri, Texas, and Utah, to countries like the United Kingdom, Australia, and Indonesia. 

Instead of realizing that mass surveillance and age gates aren't exactly crowd favorites, Utah lawmakers have decided that VPNs themselves are the real issue.

Next week, on May 6, 2026, Utah will become, to EFF’s knowledge, the first state in the nation to target the use of VPNs to avoid legally mandated age-verification gates. While advocates in states like Wisconsin successfully forced the removal of similar provisions due to constitutional and technical concerns, Utah is proceeding with a mandate that threatens to significantly undermine digital privacy rights. 

What the Bill Does

Formally known as the “Online Age Verification Amendments,” Senate Bill 73 (SB 73) was signed by Governor Spencer Cox on March 19, 2026. While the majority of the bill consists of provisions related to a 2% tax on revenues from online adult content that is set to take effect in October, one of the more immediate concerns for EFF is the section regulating VPN access, which goes into effect this coming Wednesday.

The VPN Provisions

The new law explicitly addresses VPN use in Section 14, which amends Section 78B-3-1002 of existing Utah statutes in two primary ways:

1. Regulation based on physical location: Under the law, an individual is considered to be accessing a website from Utah if they are physically located there, regardless of whether they use a VPN, proxy server, or other means to disguise their geographic location.
2. Ban on sharing VPN instructions: Commercial entities that host "a substantial portion of material harmful to minors" are now prohibited from facilitating or encouraging the use of a VPN to bypass age checks. This includes providing instructions on how to use a VPN or providing the means to circumvent geofencing.

By holding companies liable for verifying the age of anyone physically in Utah, even those using a VPN, the law creates a massive "liability trap." Just like we argued in the case of the Wisconsin bill, if a website cannot reliably detect a VPN user's true location and the law requires it to do so for all users in a particular state, then the legal risk could push the site to either ban all known VPN IPs, or to mandate age verification for every visitor globally. This would subject millions of users to invasive identity checks or blocks to their VPN use, regardless of where they actually live. 

"Don't Ask, Don't Tell"

In practice, SB 73 is different from the Wisconsin proposal in that it stops short of a total VPN ban. Instead, it discourages using VPNs by imposing the liability described above and by muzzling the websites themselves from sharing information about VPNs. This raises significant First Amendment concerns, as it prevents platforms from providing basic, truthful information about a lawful privacy tool to their users. 

Unlike previous drafts seen in other states, SB 73 doesn't explicitly ban the use of a VPN. Under a "don't ask, don't tell" style of enforcement, websites likely only have an obligation to ask for proof of age if they actually learn that a user is physically in Utah and using a VPN. If a site doesn’t know a user is in Utah, their broader obligation to police VPNs remains murky. So, while SB 73 isn’t as extreme as the discarded Wisconsin proposal, it remains a dangerous precedent.

Technical Feasibility

Then there is also the question of technical feasibility: Blocking all known VPN and proxy IP addresses is a technical whack-a-mole that likely no company can win. Providers add new IP addresses constantly, and no comprehensive blocklist exists. Complying with Utah’s requirements would require impossible technical feats.

The internet is built to, and will always, route around censorship. If Utah successfully hampers commercial VPN providers, motivated users will transition to non-commercial proxies, private tunnels through cloud services like AWS, or residential proxies that are virtually indistinguishable from standard home traffic. These workarounds will emerge within hours of the law taking effect. Meanwhile, the collateral damage will fall on businesses, journalists, and survivors of abuse who rely on commercial VPNs for essential data security.

These provisions won't stop a tech-savvy teenager, but they certainly will impact the privacy of every regular Utah resident who just wants to keep their data out of the hands of brokers or malicious actors.

Uncharted Territory

Lawmakers have watched age-verification mandates fail and, instead of reconsidering the approach, have decided to wage war on privacy itself. As the Cato Institute states: 

“The point is that when an internet policy can be avoided by a relatively common technology that often provides significant privacy and security benefits, maybe the policy is the problem. Age verification regimes do plenty of damage to online speech and privacy, but attacking VPNs to try to keep them from being circumvented is doubling down on this damaging approach."

Attacks on VPNs are, at their core, attacks on the tools that enable digital privacy. Utah is setting a precedent that prioritizes government control over the fundamental architecture of a private and secure internet, and it won’t stop at the state’s borders. Regulators in countries outside the U.S. are still eyeing VPN restrictions, with the UK Children’s Commissioner calling VPNs a “loophole that needs closing” and the French Minister Delegate for Artificial Intelligence and Digital Affairs saying VPNs are “the next topic on my list” after the country enacted a ban on social media for kids under 15.

As this law goes into effect next week, we are entering uncharted territory. Lawmakers who can’t distinguish between a security tool and a "loophole" are now writing the rules for one of the most complex infrastructures on Earth. And we can assure that the result won't be a safer internet, only an increasingly less private one.