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.

Lots of articles about this.

As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.

Blog moderation policy.

The MIT School of Humanities, Arts, and Social Sciences (SHASS) and Dean Agustín Rayo recently welcomed six new professors to the MIT community. They arrive with diverse backgrounds and vast knowledge in their areas of research.

Grisha Coleman is a full professor in the Music and Theater Arts Section. Her research explores tensions between our physiological, technological, and ecological systems; human movement, our machines, and the places we inhabit. Her practice engages an interdisciplinary approach to these explorations. Coleman received the Doris Duke Foundation’s Performing Arts Technologies Lab Award. Her work has been supported by Carnegie Mellon University’s STUDIO for Creative Inquiry, Creative Capital, the Jerome Foundation, MacDowell, the MAP Fund, the National Endowment for the Arts, the New York Foundation for the Arts, Pioneer Works, the Rockefeller Foundation Bellagio Center, Stanford University’s Mohr Visiting Artist program, and the Surdna Foundation. Coleman was previously a professor at Northeastern University and an associate professor at Arizona State University. She earned an MFA in music composition and integrated media from California Institute of the Arts.

Tung-Hui Hu is an associate professor with tenure in the Comparative Media Studies/Writing program. A poet and a scholar of digital media, he is the author of five books, most recently “Digital Lethargy: Dispatches from an Age of Disconnection” (MIT Press, 2022), “A Prehistory of the Cloud” (MIT Press, 2015), and “Greenhouses, Lighthouses” (Copper Canyon Press, 2013). Hu is interested in how concepts such as race and normal language became measurable, governable objects in the form of datasets. His research on data centers, artificial intelligence, burnout, and visual art has been featured in places such as CBS News, BBC Radio 4, WIRED, and MoMA R&D. He has been awarded fellowships from the American Academy in Rome, the National Endowment for the Arts, and the American Academy in Berlin. Prior to joining MIT, he was a faculty member at the University of Michigan.

Claire Luchette is an assistant professor in the Comparative Media Studies/Writing program. Luchette is the author of the novel “Agatha of Little Neon.” The winner of a Whiting Award and a National Book Foundation 5 Under 35 Honoree, Luchette has received fellowships from the Harvard Radcliffe Institute, the New York Public Library's Cullman Center for Scholars and Writers, MacDowell, Yaddo, and the National Endowment for the Arts. Their writing appears in Best American Short Stories, Ploughshares, and the Pushcart Prize anthology. Their second novel, “Swans,” and a story collection, “Big Whoop,” are forthcoming.

Shota Momma is an associate professor in the Department of Linguistics and Philosophy. Momma is a specialist in psycholinguistics and its interaction with linguistic theory — with a particular focus on the mechanisms of sentence production. Previously, Momma taught as an assistant professor at the University of Massachusetts Amherst. He earned a PhD in linguistics from the University of Maryland and completed a postdoctoral fellowship at the University of California San Diego. 

Lindsey Raymond PhD ’24 is an assistant professor in the Department of Economics, holding an MIT Schwarzman College of Computing shared position with the Department of Electrical Engineering and Computer Science. Her research examines how new technologies shape labor markets and market competition, and how insights from economics can inform algorithm design. She is a Schmidt Sciences AI2050 Early Career Fellow and served as a staff economist at the White House Council of Economic Advisers in 2021–22. Before joining MIT, Raymond was a postdoc at Microsoft Research. She earned her PhD from MIT and her BA from Yale University.

Makoto Harris Takao is the Class of 1957 Career Development Professor in the Music and Theater Arts Section. Working at the intersection of cultural history, religious studies, and musicology, Takao maps Japan’s entanglement with other world regions over the past 500 years. His current book project, “The Clef and the Cross: Music and Kirishitan Transculturation in Sixteenth-Century Japan,” asks what early modern Japanese Catholicism sounded like and how it was understood and expressed through Buddhist frameworks of sound, music, and movement. His work to date has appeared in such venues as Early Music, Journal of Music History Pedagogy, Journal of Religious History, Journal of Jesuit Studies, Zeithistorische Forschungen, and Oxford Bibliographies in Music. A player of the viola da gamba, Takao completed a joint PhD in history and musicology at the University of Western Australia. Before joining MIT, he was an assistant professor of musicology at the University of Illinois at Urbana-Champaign.

Ever since she was a child playing on her family’s farmland in Wisconsin, Bailey Flanigan was guided by her own selective, yet wide-ranging, curiosity. Describing her young self as spirited and a bit unruly, she directed her energies to everything from building booby traps to doing experimental construction projects to exploring an intense interest in medicine to writing fiction and music to planning nonprofit organizations to help lessen social inequality.

By high school, Flanigan was intensely drawn to particular subjects.

“I found myself unmotivated to take all the AP [advanced placement] classes for the sake of it. My interest was captured by classes where I could be creative — where I could use math to solve real-world problems, creatively write, make music, connect distant ideas, or deeply explore the humanities — and I worked on such classes obsessively, as an opportunity to explore my intuitions and interests,” she says. “Instead of joining clubs, I ended up spending a lot of time thinking and creating on my own, and trying to understand what I enjoyed.”

Today Flanigan is a shared faculty member between the MIT Schwarzman College of Computing and the MIT departments of Political Science and Electrical Engineering and Computer Science (EECS), and a principal investigator in the MIT Laboratory for Information and Decision Systems. She has been involved in research at the University of Wisconsin, the National Institutes of Health, Google, and Carnegie Mellon, Drexel, Harvard, Princeton, and Stanford universities. Her current work focuses on using computational and mathematical tools to create new avenues for meaningful democratic participation.

Perhaps not surprisingly, her path has crossed huge expanses of subject matter and specialties — from medicine and bioengineering to public health, and from economics to her joint appointment at MIT in computer science and political science, which began in fall 2025.

“My trajectory across disciplines was just a result of me chasing down the problems I felt were most pressing or inspiring at the time. Along the way, I wound up in a lot of situations where I was less well-trained or qualified in the standard ways. While this was sometimes precarious, it was also incredibly fun, and it cultivated my ability to learn the languages of new disciplines more easily — a skill pretty much essential to my current research and job.”

In college at the University of Wisconsin at Madison, Flanigan worked in a wet lab on therapeutic targets in cancer and computationally on tumor genetics. She says she found the research intellectually interesting, but eventually began to wonder about whether it would have the kind of impact she wanted.

“At the time, I started to worry that the science I was developing might only, in the best case, be used by a small, relatively wealthy fraction of the world, when there were people suffering from much more-preventable diseases in much larger numbers,” she says.

So Flanigan moved toward public health, where she researched microfluidic devices for HIV detection that could be used in low-resource settings. Still bothered by the circumstances driving these settings’ limited resources to begin with, she then started to dabble in economics.

Around the same time, Flanigan’s academic advisors were chipping away at preconceptions she held about her own abilities.

Steven Wright, a professor of law and creative writing at UW-Madison, served as Flanigan’s informal mentor throughout college, and they worked together on a case at the Wisconsin Innocence Project.

“He guided me through my evolving interests in science, social inequality, and economics,” she says. “He was one of the people most responsible for convincing me that I could aim higher in my career, and that I could actually go to places like MIT or Harvard.”

Also while she was in college, the two heads of the UW-Madison scholarship office, Debbie Berger and Julie Stubbs, sent Flanigan repeated emails, encouraging her to apply for a Goldwater Scholarship.

“I kept deleting their emails, thinking they were spam — I didn’t think I was the kind of person that would apply for something like that. Their persistence convinced me to apply, and in the process, the horizons I perceived for myself started to change,” she says.

After graduating from UW-Madison, Flanigan worked as a predoctoral research assistant in economics at Princeton. There, Professor Evita Nestoridi, now an associate professor at Stony Brook University, also provided a pivotal moment of support, letting Flanigan audit her real analysis class.

“Evita’s class was my first real exposure to formal mathematics and proofs, and I loved it so much that it completely changed my career trajectory,” Flanigan says. “Despite my initial doubts, she convinced me that I could do math at the graduate level; because of her encouragement, I applied to computer science PhD programs the subsequent fall.”

Choosing Carnegie Mellon for her PhD, Flanigan began research on social choice and democratic decision-making, serving her dual passions for technical research and the issue of “who gets what and why,” she says, quoting Nobel Prize-winning economist Al Roth. 

Flanigan has developed algorithms that randomly choose participants of citizens’ assemblies, designed for the common case where willing participants self-select in ways that do not reflect the larger population. In a policy brief, Flanigan gave a hypothetical  example of an assembly on artificial intelligence, whose willing participants might skew toward younger, more educated citizens with an interest in technology, leaving other groups underrepresented despite their stake in the issue. The tools Flanigan has developed help balance representation with such features of the selection process as equality among individuals’ chances to participate, resistance to manipulation of the process, and transparency — all of which can affect the general perception of a decision-making group’s legitimacy.

Flanigan’s work is now deployed on panelot.org, a widely used open-access website hosting algorithms for randomly selecting citizen assembly participants.

“The site basically walks practitioners through a series of otherwise very technical trade-offs, making those trade-offs legible and then optimizing according to the priorities practitioners dictate,” she says.

Flanigan says she is motivated to improve how the public makes political decisions, “because if any political solution is going to be viable, the public needs to feel that it was arrived at via a legitimate political process — at least under the forms of government I find most appealing.”

Beyond her work on citizens’ assemblies, Flanigan’s research is exploring new avenues related to how to more systematically get public input on complex decisions, and how the format of questions we ask people in preference elicitation contexts can affect the substance of what we conclude.

“I feel so lucky to be studying these questions from within both political science and EECS, because I have the freedom to explore both the political and technical substance of tools for more direct governance as deeply as I want,” she says.

Flanigan’s curiosity-driven journey through widely varying terrain feels right in the MIT environment, she says.

“From the beginning, I got this sense of belonging at MIT — like my ways of thinking and problem-solving, which had seemed peculiar in many situations, actually made me belong more,” she says. “This was a super refreshing feeling, and it has been 100 percent borne out since I arrived.”

Reversing course, Flock Safety—the surveillance technology vendor most known for its extensive network of automated license plate readers—has announced that it will end a pilot for its acoustic gunshot detection devices to identify signs of “human distress.”

In October 2025, EFF warned the public that Flock was rolling out a new feature called “Distress Detection” that would be deployed through their acoustic gunshot detection devices (formerly known as Flock Raven, now called Audio Detection). This feature purported to use high-powered microphones scattered throughout a city to search for sounds of human distress, with original advertisements from the product indicating it would search for “screaming.” (Since the publication of our original blog post, Flock quietly amended the ad on this webpage to say “distress” instead of “screaming.”)

Now, Flock has published a blog post stating that “[a]fter careful consideration and community consultation, we decided to remove the feature.” Good riddance. 

We said it when the product was announced and we’ll say it again: this was a misguided and dangerous feature because of the civil liberties concerns it poses, the possibility it could summon armed police to every loud interaction happening on the street, and because in several places this type of spying would be illegal under state eavesdropping laws. 

We were not quiet about this potential new feature. Flock even mentioned our concern about Distress Detection in an attempt to rebut our opposition to the mass surveillance their products enable.

The suspension of Distress Detection, however, does not mean that these high-powered microphones are now magically safe or beyond our concern. Acoustic gunshot detection is still a dangerous and often highly inaccurate technology that has resulted in real world harm, as in Chicago where it resulted in police shooting at children lighting fireworks. As Flock itself states, “No acoustic system is perfect, and we don't claim otherwise.” But police response to a situation where they believe guns are actively in use seems like a pretty high-stakes situation to be making, selling, and deploying technology known to be imperfect. Flock’s devices also listen for more than just gunshots. Their marketing materials admit to be listening for “community disruption,” which includes “non-violent” threats like car sideshows and fireworks. 

Flock’s failed attempt to roll out Distress Detection teaches us a few important lessons about the current state of police surveillance. First, we should not assume that just because these companies are large and well-funded, that does not ensure that they are complying with local privacy laws before floating new products to customers. Second, companies roll out and police adopt invasive technology under the justification that it will be used to address our society’s very worst crimes. However, both the companies and police will leverage deployed surveillance infrastructure to introduce new uses without necessarily seeking the consent or approval of the public. Gunshot detecting microphones eventually being used to listen for screaming is exactly the type of mission creep that we’ve seen happen with other pieces of surveillance technology, including Flock’s license plate readers. Finally, gun violence is too serious and complex of an issue to purport to solve with one flawed piece of technology. It has become too easy for police and cities to listen to the fancy marketing pitches of tech companies claiming they’re going to solve all crime instead of doing the hard work of addressing the root causes of societal issues. And, in the meantime, that technology creates more problems and hazards for the communities they blanket in police surveillance. 

As we’ve also seen with people across the country pushing back on Flock license plate reader contracts in their communities, public pressure can sometimes work to influence both companies and lawmakers that control a city’s purse strings to discontinue or divest from harmful products. Flock’s decision to end “Distress Detection” for human voices is a win.  

This month, we celebrate 36 years of EFF and a mission that is bigger than any one of us. Thanks to EFF, communities around the world are demanding that technology protects their freedom, advances justice, and opens doors to opportunity. That's not a small thing—it's a life's work worth continuing.

If you are committed to staying on the cutting edge of digital rights issues, I'd like to invite you to consider taking that commitment one step further by joining EFF’s Lighthouse Society, our way to acknowledge and thank the community of supporters who are including EFF in their legacy plans.

Learn About the Lighthouse Society

By including EFF in your will or estate plans, you can ensure that EFF’s work and values don't just live beyond you; they thrive because of you. A legacy gift is one of the most powerful ways to say: This matters, and I want it to matter long after I'm gone.

Your gift will fuel our mission for generations by protecting freedom, advancing justice, and driving innovation for communities who need it most. There is still so much more to do, so much more to fight for. With your foresight, it can go so much further.

Planned giving is also more flexible than you might realize. A bequest in your will, a simple beneficiary designation, or another estate planning option can all make a profound difference, often without affecting your finances today.

Get in touch and learn more about what's possible with the Lighthouse Society. Reach out to Jocelyn Wicker at majorgifts@eff.org or fill out our online form to share your intention to give. Thank you for considering a legacy that will carry this work forward for years to come.

When Ubisoft's Watch Dogs 2 was released in 2016, it was a headtrip for those of us working on digital-rights issues in the Bay Area. During the day, I'd fight tech-authoritarianism from EFF's San Francisco offices and then, at night, I'd fight tech-authoritarianism in an uncanny simulation of San Francisco from my home gaming console.  

Watch Dogs 2 is an open-world video game that follows a hacktivist collective called Dedsec as they take on surveillance tech and discriminatory AI systems that are being controlled by tech bros, government contractors, and corrupt cops. The game's missions often felt like they were ripped from the pages of EFF's Deeplinks blog.  

EFF’s mission is defending civil liberties in the digital world, and we do that with activists, technologists, and lawyers. If you've ever dreamt of joining Dedsec, you should definitely join us as a member.  

 Join the movement to Take Back CTRL.  

In fact, we've even got the same merch aesthetic. I cosplayed as the lead character, Marcus, at Dragon Con, and no one even knew I was in costume. 

Dave (left) as Marcus takes a selfie with a Wrench cosplayer at Dragon Con 2018.

To commemorate Watch Dog 2's 10th anniversary, I'll be speaking on a panel at San Diego Comic-Con reflecting on how the game predicted tech issues we're facing today. Organized by Mia Ginae of The Mighty Hostess and Black in Gaming, we've got voice actors Ruffin Prentiss lll and Shawn Baichoo, cinematic producer Timmy Fisher, and music producer Hudson Mohawke, who did the soundtrack, with Mia Ginae moderating. That's at 3:15 PM on Friday, July 24 in room 6BCF. 

But not everyone can get to Comic-Con and I certainly have more to say that can fit in. So here are a few ways where Watch Dogs 2 mirrored our work back then and foresaw what we're facing today.

Check out our full San Diego Comic Schedule, including panels and a meet-up. 

Insecure Surveillance Cameras 

One of the signature gameplay elements of the Watch Dogs series is the ability for your character to hack into nearby security cameras from your phone and use that to gain a strategic advantage over hostile adversaries. 

About a year before, that's exactly the issue that we were working on. EFF Technologist Cooper Quintin and I used the service Shodan to identify a slew of automated license plate readers (ALPRs) that Louisiana police had left unprotected on the internet. We found that the controls were open to anyone to manipulate and, just like in the game, you could watch the live video feeds.

We didn't use the data to acquire a skill point or collectible outfit. Instead, we forced police agencies to lock down their equipment and then used what we learned to persuade then Gov. Bobby Jindal to veto a bill that would have created a new statewide surveillance dragnet.  

This issue still persists today. Most recently, security researchers Benn Jordan and Jon “GainSec” Gaines, and the award-winning journalists at 404 Media, uncovered how at least 60 pan-tilt-zoom cameras from the vendor Flock Safety were left exposed online.

Cell-Site Simulators 

In Watch Dogs 2 there's a mission called "Stolen Signals," in which Marcus and his best friend Wrench are trying to locate "stingrays," police devices that gather nearby cell-phone data by masquerading as legit cellular towers. We call these "cell-site simulators" (CSSs) and they're are an extremely alarming mass surveillance technology that allows police to track individual users through their phone identifiers. We've long advocated that this should require a search warrant.   

Like Dedsec, we also had initiated a project to do the exact same thing. And in true Dedsec fashion, we also gave it a pop-culture name: Crocodile Hunter, an homage to wildlife expert Steve Irwin, who had famously died after a stingray attack.  

But while Marcus was running around Telegraph Hill, staff technologist Cooper Quintin and I were running around downtown San Francisco, testing out our own device for detecting suspicious cell phone towers during Salesforce's annual Dreamforce conference. And while we didn't find a CSS that day, we did find a mobile surveillance tower that a start-up had set up for the event.

Cooper Quintin, EFF's own 'Wrench,' testing out Crocodile Hunter at Dreamforce

Today, that project has evolved into Rayhunter, which allows anyone to use a cheap mobile hotspot to detect the type of cellular anomalies associated with CSSs. We're proud to say that now there's a whole international Dedsec-style network of researchers using this technology to look for surveillance at protests, at the border, and in metropolitan areas.  

Security Robots 

Throughout the game, Marcus encounters a number of autonomous pickle-shaped security robots wandering the city. At one point, Wrench reprograms one to become "Wrench Jr," a bona fide member of the Dedsec team.  

In real life, these robots are made by a company called Knightscope, and EFF started shining light on them in 2020-2021, when they were first being deployed by companies and government agencies.

A Knightscope robot patrols a casino parking lot in Reno, Nevada.

Today, law enforcement is pursuing weaponized robots and drones, and EFF is at the forefront to stop this dystopian reality. In fact, in December 2022, we successfully fought for San Francisco to ban the police department from weaponizing drones. In 2024, New York Police Department also retired its subway robot.

A Citywide Surveillance "Operating System" 

In the Watch Dog series, one of the ominous developments is CTOS 2.0 (Central Operating System 2.0). Through this system, Blume, a government contractor, tries to collect a massive amount of data through citywide sensors and infrastructure, and to combine all that data into one unified—and totally insecure—analytics system.  

At the time we'd only just begun to see this idea floated, with a limited number of cities trying tools like Palantir's Gotham to manage data.  

Today, it is a frighteningly competitive market, particularly when it comes to law enforcement surveillance. For example, both Axon and Flock Safety are trying to offer products that integrate with every function of policing that sound like CTOs. In fact, Flock Safety product is literally titled, "Flock OS."

Fusus demonstrated at a police chief's conference.

Meanwhile, Axon's camera networking product, "Fusus," sounds like it came straight from the Watch Dogs' writers room. Fusus allows for central live-streaming of all types of surveillance cameras in a city, including body-worn cameras, which was another prediction from the Watch Dog series that came true.  

EFF has been part of many local battles to reject Flock and Axon surveillance systems, and we've also advocated against recent efforts at the federal level to consolidate government data.  

Join the Fight Against Authoritarian Tech 

Watch Dogs 2's protagonists aren't just the merry band of core hackers: It's a distributed movement spread across the region and social media. The sequel, Watch Dogs Legion, is even designed so that every single person in the city of London is a potential playable Dedsec member, ready to take on tech tyranny with whatever skills they have.  

That's also our philosophy: If you use tech, if you're affected by tech, this is your fight. And it's time to take back control. 

There are a lot of ways to do this. You can become a member by donating. You can contact public officials through our Action Center. You can join the thousands of volunteers who are helping gather data on surveillance through our Atlas of Surveillance project. You can also hunt cell-site simulators with us—and help improve our code—through the Rayhunter project.  

And just like Watch Dogs 2, this is a game we can win if we work together.

Really interesting piece of cryptographic history:

In November 2023, a large cache of his wartime papers—nicknamed the “Bayley papers”—was auctioned in London for almost half a million U.S. dollars. The previously unknown cache contains many sheets in Turing’s own handwriting, telling of his top-secret “Delilah” engineering project from 1943 to 1945. Delilah was Turing’s portable voice-encryption system, named after the biblical deceiver of men. There is also material written by Bayley, often in the form of notes he took while Turing was speaking. It is thanks to Bayley that the papers survived: He kept them until he died in 2020, 66 years after Turing passed away...

Groups on both sides of the political spectrum are using a National Academies review of attribution science to score points ahead of a landmark Supreme Court case on climate liability.

A new POLITICO Poll found that Americans’ attitudes toward data centers have grown increasingly sour and politically polarized in the past six months.

The administration's deals are a major blow for states that were counting on that power to keep pace with growing energy demand and decarbonize their grids.

The new Public Policy Institute of California survey comes amid questions about electric vehicle affordability in the absence of federal rebates.

Brussels is worried that the U.S. and China might retaliate over extending the EU’s Emissions Trading System to long-haul flights.

Oil and gas firms say EU methane rules will force them to stop exporting to Europe. The European Commission thinks they’re bluffing.

Two policy announcements on Friday will show whether the commission can keep its emissions-cutting promises.

Experts say that the dramatic falls in reported methane emissions are the result of a small but fundamental change in the methodology for measuring them.

An official blamed a lack of rain, although severe water shortages began affecting some of the island’s most populated areas months before the drought began.

As sea levels rise due to climate change, encroaching sea water will likely make freshwater environments saltier. In a new study, MIT researchers have shown how that increase in salinity might affect microbial ecosystems found in environments such as rivers and estuaries.

These microbial communities play important roles in the carbon cycle, and they also help to decompose organic matter such as algae. The MIT team found that when salt levels rise, these populations lose diversity as faster-growing strains tend to take over the community, but they maintain their overall growth rate.

“At higher salinity, you lose diversity, which is ultimately not good for an ecosystem. But what we were surprised at is that in the meantime, even though diversity decreases, the growth of the community and the production of biomass is not impacted that much,” says Jana Huisman, an MIT postdoc and the lead author of the new study.

Jeff Gore, an MIT professor of physics, is the senior author of the paper, which appears today in Nature Microbiology. Martina Dal Bello, a former MIT postdoc who is now an assistant professor of ecology and evolutionary biology at Yale University, is also an author of the study.

Rising salt levels

Microbes that live in aquatic environments are typically adapted to thrive in fresh or salt water, or somewhere in between. Microbes that live in higher salt environments have cell walls that are optimized to resist osmotic pressure, and membrane transporters that can pump sodium ions out of the cell.

Freshwater lakes and rivers have salt concentrations around 1 gram of salt per liter of water (g/L), while oceans can reach 35 g/L. As the climate warms and sea levels rise, those oceanic waters may seep into estuaries and other inland bodies of water, increasing their salinity.

“When you think about climate change, you can think about rising temperatures, which is very common, but also a lot of other environmental stresses are going to increase,” Huisman says.

Huisman is from the Netherlands, a country with an extensive coastal delta, and she was interested in exploring how changes in salinity might affect microbial ecosystems in those aquatic habitats. The new study builds on previous work from Gore’s lab showing that higher seawater temperatures tend to favor slower-growing bacteria. 

For the new study, the researchers took samples from three aquatic environments with varying salinity: the Charles River near the MIT Sailing Pavilion (4 g/L), Boston Harbor (30 g/L), and a beach in Nahant, Massachusetts (35 g/L). Each community contained hundreds of species of microbes. The researchers then grew each population in three environments of varying salinity — 16, 31, or 46 g/L.

Over two weeks, the researchers measured the communities’ growth rates and found that overall, each community maintained the same growth rate at each of the three concentrations. However, in the communities exposed to higher salt environments, the overall composition became less diverse. Further studies showed that these communities tended to be dominated by faster-growing species. 

“We saw that those communities that had been propagated at higher salinity had reached a markedly different composition than the ones that lower salinity,” Huisman says.

Natural ecosystems

To explore whether their lab results might correspond to what happens in natural ecosystems, the researchers analyzed publicly available genomic data from microbes found in different aquatic ecosystems, including the Chesapeake Bay, the Gulf of Mexico, and the Baltic Sea.

For this portion of the study, the researchers focused on a genetic marker called the 16S rRNA gene copy number, which can be used as a proxy for the maximum growth rate that a species can attain. The more copies of this gene that a species has, the faster its intrinsic growth rate.

The researchers found that in these natural communities, environments with higher salinity also tended to be dominated by faster-growing species.

“When we first saw that, it was very exciting — that, indeed, what we found in the lab seems to also be represented in data from natural communities, sampled across a range of different environments,” Huisman says. “You see the same signatures in such data, and that’s highly suggestive that what we found in the lab might also be true in natural environments.”

One potential drawback to this loss of diversity is a reduction in microbial populations’ ability to withstand other types of environmental stress, the researchers say.

In this study, the researchers did not investigate the functions of the individual bacterial strains that ended up becoming more prevalent. Some of them may play beneficial roles, but it’s also possible that some of them might be pathogenic strains.

“Whether you want faster-growing species to take over or not might also be related to what the identity of those species is. That is something that I’m interested in looking at in the future,” Huisman says. 

The research was funded by a Human Frontier Science Program Fellowship and a Schmidt Science Polymath Award.

Growing up in Colombia, Diana Grass had a simple response whenever someone told her something was impossible.

“I’ll figure it out.”

It’s a phrase that she still lives by today as PhD candidate in the Harvard-MIT Program in Health Sciences and Technology (HST), as she develops soft bioelectronic devices to study the physiological signals through which the brain and body communicate. 

“I’ve always been fascinated by one question: How do complex systems work?” Grass says.

An instinct to get to the bottom of things has guided Grass’ unconventional academic journey across continents and disciplines. Before becoming a neuroscientist and engineer, Grass studied philology and education to understand how language evolves, preserves knowledge, and shapes human communication. Looking back, she sees a common thread. “I wasn’t just studying language,” she says. “I was learning how complex systems communicate.”

But it wasn’t until she moved to the United States and began working as a medical interpreter that her scientific interests took a new direction.

“Every day, I translated conversations between physicians and patients with neurological disorders,” she says. “Watching those interactions sparked a fascination with the brain. I was intrigued by how a single organ could shape how we communicate, and ultimately who we are.”

Working alongside clinicians, Grass watched them rely on laboratory tests, medical imaging, and vital signs to understand what was happening inside the body. Despite remarkable advances in medical imaging and diagnostics, clinicians still rely largely on isolated snapshots of biological processes that are continuously changing inside the body.

“The body is communicating all the time,” she says. “We still lack the tools to understand its language.”

Determined to better understand the brain, Grass returned to school to study neuroscience with a minor in pre-medicine. She joined an immunology laboratory at Rutgers New Jersey Medical School, where she investigated neuroimmune communication and gained a new appreciation for the body’s interconnected physiology.

“Until then, I had been fascinated by the brain,” she says. “My work in immunology made me realize that the nervous system doesn’t function in isolation,” she says. “It continuously communicates with the immune system and peripheral organs to coordinate physiology and maintain homeostasis. To understand health and disease, we have to understand how those interactions preserve or disrupt that balance.” 

That realization transformed her scientific focus from understanding the brain to understanding how the nervous system coordinates physiology through continuous communication with the rest of the body, beginning with the immune system.

The complexity of that question ultimately brought Grass to pursue a PhD in medical engineering and medical physics with the HST program. She works in the Bioelectronics Group, led by Polina Anikeeva, the Matoula S. Salapatas Professor and head of MIT’s Department of Materials Science and Engineering. Grass also uses facilities in the T.J. Rodgers Laboratory and MIT.nano, and is part of the K. Lisa Yang Brain Body Center. 

Today, Grass develops soft bioelectronic devices that integrate seamlessly with soft peripheral tissues without damaging them, to continuously monitor multiple physiological signals while enabling electrical recording and stimulation of neural circuits. These technologies provide a new way to investigate how neural communication coordinates physiology across the entire body. This knowledge could enable earlier diagnosis, more precise therapies, and a new generation of bioelectronic medicine.

For Grass, the work has taken on an even deeper significance since becoming a mother. Grass has two school-age children and for her, the possibility of developing technologies that help detect disease earlier and personalize treatments isn’t just a scientific goal; it’s one she hopes will shape the future of medicine for the next generation. 

“I want to contribute to a future where medicine understands the body physiology well enough to predict disease instead of simply reacting to it, personalize therapies with greater precision, and ultimately give families more healthy years together,” she says. “Because once you become a parent, every scientific question becomes deeply human.”

The complexity of Grass’ research has required her to step well beyond her original training. After studying neuroscience and immunology, she immersed herself in materials science, systems physiology, device fabrication, bioelectronics, and surgery to develop the tools needed to answer fundamental biological questions.

“The scientific question was bigger than any one discipline,” she says. “HST taught me to begin with biology, not disciplines. Once you understand the biological principles, medicine, engineering, and science stop being separate fields. They become complementary ways of answering the same question.”

The constant need to learn a new discipline has been both the most rewarding and challenging part of Grass’ research so far. 

“Every time I crossed into a new discipline, I felt like an immigrant again,” she says. “I had to learn a new language, understand a new culture, and earn the trust of people who had spent their careers there.”

Grass’ passion for understanding cultures extends well beyond the lab. Soon after arriving at MIT, she co-founded the Graduate First-Generation Low-Income Student Group to create a supportive space for students and connect them with the resources they need to thrive. What began as a small initiative has grown into a community of more than 300 graduate students representing over 60 countries, connecting students with faculty, alumni, entrepreneurs, and industry leaders.

“It has been really rewarding to see new GFLI leaders emerge and continue this legacy,” Grass says.

As an avid traveler, Grass’ favorite pastime is exploring new cultures, whether that be through learning a new traditional recipe or a new language. She speaks four languages fluently and can say “thank you” in roughly 50 more.

Whether she’s cooking Thai food with her children or introducing friends to recipes from around the world, she sees food as another language capable of connecting people across cultures. That same philosophy shapes how she thinks about science.

“I’ve realized that every culture has its own language and every scientific discipline its own way of understanding the world,” she says. “Looking back, every stage of my life has been about understanding how complex systems communicate. Today, my goal is to help medicine understand the principles that govern communication across the human body in health and disease.”

Nature Climate Change, Published online: 17 July 2026; doi:10.1038/s41558-026-02705-x

Offshore wind development presents huge potential for climate change mitigation, but loud underwater noises produced during construction can negatively impact marine species. Recent research shows that careful planning and noise-reduction technologies can effectively reduce impacts on critically endangered North Atlantic right whales at relatively minor additional cost.