Advancements in battery innovation are transforming both mobility and energy systems alike, according to Kurt Kelty, vice president of battery, propulsion, and sustainability at General Motors (GM). At the MIT Energy Initiative (MITEI) Fall Colloquium, Kelty explored how GM is bringing next-generation battery technologies from lab to commercialization, driving American battery innovation forward. The colloquium is part of the ongoing MITEI Presents: Advancing the Energy Transition speaker series.

At GM, Kelty’s team is primarily focused on three things: first, improving affordability to get more electric vehicles (EVs) on the road. “How do you drive down the cost?” Kelty asked the audience. “It's the batteries. The batteries make up about 30 percent of the cost of the vehicle.” Second, his team strives to improve battery performance, including charging speed and energy density. Third, they are working on localizing the supply chain. “We've got to build up our resilience and our independence here in North America, so we're not relying on materials coming from China,” Kelty explained.

To aid their efforts, resources are being poured into the virtualization space, significantly cutting down on time dedicated to research and development. Now, Kelty’s team can do modeling up front using artificial intelligence, reducing what previously would have taken months to a couple of days.

“If you want to modify … the nickel content ever so slightly, we can very quickly model: ‘OK, how’s that going to affect the energy density? The safety? How’s that going to affect the charge capability?’” said Kelty. “We can look at that at the cell level, then the pack level, then the vehicle level.”

Kelty revealed that they have found a solution that addresses affordability, accessibility, and commercialization: lithium manganese-rich (LMR) batteries. Previously, the industry looked to reduce costs by lowering the amount of cobalt in batteries by adding greater amounts of nickel. These high-nickel batteries are in most cars on the road in the United States due to their high range. LMR batteries, though, take things a step further by reducing the amount of nickel and adding more manganese, which drives the cost of batteries down even further while maintaining range.

Lithium-iron-phosphate (LFP) batteries are the chemistry of choice in China, known for low cost, high cycle life, and high safety. With LMR batteries, the cost is comparable to LFP with a range that is closer to high-nickel. “That’s what’s really a breakthrough,” said Kelty.

LMR batteries are not new, but there have been challenges to adopting them, according to Kelty. “People knew about it, but they didn’t know how to commercialize it. They didn’t know how to make it work in an EV,” he explained. Now that GM has figured out commercialization, they will be the first to market these batteries in their EVs in 2028.

Kelty also expressed excitement over the use of vehicle-to-grid technologies in the future. Using a bidirectional charger with a two-way flow of energy, EVs could charge, but also send power from their batteries back to the electrical grid. This would allow customers to charge “their vehicles at night when the electricity prices are really low, and they can discharge it during the day when electricity rates are really high,” he said.

In addition to working in the transportation sector, GM is exploring ways to extend their battery expertise into applications in grid-scale energy storage. “It’s a big market right now, but it’s growing very quickly because of the data center growth,” said Kelty.

When looking to the future of battery manufacturing and EVs in the United States, Kelty remains optimistic: “we’ve got the technology here to make it happen. We’ve always had the innovation here. Now, we’re getting more and more of the manufacturing. We’re getting that all together. We’ve got just tremendous opportunity here that I’m hopeful we’re going to be able to take advantage of and really build a massive battery industry here.”

This speaker series highlights energy experts and leaders at the forefront of the scientific, technological, and policy solutions needed to transform our energy systems. Visit MITEI’s Events page for more information on this and additional events.

“MIT hasn’t just prepared me for the future of work — it’s pushed me to study it. As AI systems become more capable, more of our online activity will be carried out by artificial agents. That raises big questions: How should we design these systems to understand our preferences? What happens when AI begins making many of our decisions?”

These are some of the questions MIT Sloan School of Management PhD candidate Benjamin Manning is researching. Part of his work investigates how to design and evaluate artificial intelligence agents that act on behalf of people, and how their behavior shapes markets and institutions. 

Previously, he received a master’s degree in public policy from the Harvard Kennedy School and a bachelor’s in mathematics from Washington University in St. Louis. After working as a research assistant, Manning knew he wanted to pursue an academic career.

“There’s no better place in the world to study economics and computer science than MIT,” he says. “Nobel and Turing award winners are everywhere, and the IT group lets me explore both fields freely. It was my top choice — when I was accepted, the decision was clear.” 

After receiving his PhD, Manning hopes to secure a faculty position at a business school and do the same type of work that MIT Sloan professors — his mentors — do every day.

“Even in my fourth year, it still feels surreal to be an MIT student. I don’t think that feeling will ever fade. My mom definitely won’t ever get over telling people about it.”

Of his MIT Sloan experience, Manning says he didn’t know it was possible to learn so much so quickly. “It’s no exaggeration to say I learned more in my first year as a PhD candidate than in all four years of undergrad. While the pace can be intense, wrestling with so many new ideas has been incredibly rewarding. It’s given me the tools to do novel research in economics and AI — something I never imagined I’d be capable of.”

As an economist studying AI simulations of humans, for Manning, the future of work not only means understanding how AI acts on our behalf, but also radically improving and accelerating social scientific discovery.

“Another part of my research agenda explores how well AI systems can simulate human responses. I envision a future where researchers test millions of behavioral simulations in minutes, rapidly prototyping experimental designs, and identifying promising research directions before investing in costly human studies. This isn’t about replacing human insight, but amplifying it: Scientists can focus on asking better questions, developing theory, and interpreting results while AI handles the computational heavy lifting.”

He’s excited by the prospect: “We are possibly moving toward a world where the pace of understanding may get much closer to the speed of economic change.”

Our muscles are nature’s actuators. The sinewy tissue is what generates the forces that make our bodies move. In recent years, engineers have used real muscle tissue to actuate “biohybrid robots” made from both living tissue and synthetic parts. By pairing lab-grown muscles with synthetic skeletons, researchers are engineering a menagerie of muscle-powered crawlers, walkers, swimmers, and grippers.

But for the most part, these designs are limited in the amount of motion and power they can produce. Now, MIT engineers are aiming to give bio-bots a power lift with artificial tendons.

In a study appearing today in the journal Advanced Science, the researchers developed artificial tendons made from tough and flexible hydrogel. They attached the rubber band-like tendons to either end of a small piece of lab-grown muscle, forming a “muscle-tendon unit.” Then they connected the ends of each artificial tendon to the fingers of a robotic gripper.

When they stimulated the central muscle to contract, the tendons pulled the gripper’s fingers together. The robot pinched its fingers together three times faster, and with 30 times greater force, compared with the same design without the connecting tendons.

The researchers envision the new muscle-tendon unit can be fit to a wide range of biohybrid robot designs, much like a universal engineering element.

“We are introducing artificial tendons as interchangeable connectors between muscle actuators and robotic skeletons,” says lead author Ritu Raman, an assistant professor of mechanical engineering (MechE) at MIT. “Such modularity could make it easier to design a wide range of robotic applications, from microscale surgical tools to adaptive, autonomous exploratory machines.”

The study’s MIT co-authors include graduate students Nicolas Castro, Maheera Bawa, Bastien Aymon, Sonika Kohli, and Angel Bu; undergraduate Annika Marschner; postdoc Ronald Heisser; alumni Sarah J. Wu ’19, SM ’21, PhD ’24 and Laura Rosado ’22, SM ’25; and MechE professors Martin Culpepper and Xuanhe Zhao.

Muscle’s gains

Raman and her colleagues at MIT are at the forefront of biohybrid robotics, a relatively new field that has emerged in the last decade. They focus on combining synthetic, structural robotic parts with living muscle tissue as natural actuators.

“Most actuators that engineers typically work with are really hard to make small,” Raman says. “Past a certain size, the basic physics doesn’t work. The nice thing about muscle is, each cell is an independent actuator that generates force and produces motion. So you could, in principle, make robots that are really small.”

Muscle actuators also come with other advantages, which Raman’s team has already demonstrated: The tissue can grow stronger as it works out, and can naturally heal when injured. For these reasons, Raman and others envision that muscly droids could one day be sent out to explore environments that are too remote or dangerous for humans. Such muscle-bound bots could build up their strength for unforeseen traverses or heal themselves when help is unavailable. Biohybrid bots could also serve as small, surgical assistants that perform delicate, microscale procedures inside the body.

All these future scenarios are motivating Raman and others to find ways to pair living muscles with synthetic skeletons. Designs to date have involved growing a band of muscle and attaching either end to a synthetic skeleton, similar to looping a rubber band around two posts. When the muscle is stimulated to contract, it can pull the parts of a skeleton together to generate a desired motion.

But Raman says this method produces a lot of wasted muscle that is used to attach the tissue to the skeleton rather than to make it move. And that connection isn’t always secure. Muscle is quite soft compared with skeletal structures, and the difference can cause muscle to tear or detach. What’s more, it is often only the contractions in the central part of the muscle that end up doing any work — an amount that’s relatively small and generates little force.

“We thought, how do we stop wasting muscle material, make it more modular so it can attach to anything, and make it work more efficiently?” Raman says. “The solution the body has come up with is to have tendons that are halfway in stiffness between muscle and bone, that allow you to bridge this mechanical mismatch between soft muscle and rigid skeleton. They’re like thin cables that wrap around joints efficiently.”

“Smartly connected”

In their new work, Raman and her colleagues designed artificial tendons to connect natural muscle tissue with a synthetic gripper skeleton. Their material of choice was hydrogel — a squishy yet sturdy polymer-based gel. Raman obtained hydrogel samples from her colleague and co-author Xuanhe Zhao, who has pioneered the development of hydrogels at MIT. Zhao’s group has derived recipes for hydrogels of varying toughness and stretch that can stick to many surfaces, including synthetic and biological materials.

To figure out how tough and stretchy artificial tendons should be in order to work in their gripper design, Raman’s team first modeled the design as a simple system of three types of springs, each representing the central muscle, the two connecting tendons, and the gripper skeleton. They assigned a certain stiffness to the muscle and skeleton, which were previously known, and used this to calculate the stiffness of the connecting tendons that would be required in order to move the gripper by a desired amount.

From this modeling, the team derived a recipe for hydrogel of a certain stiffness. Once the gel was made, the researchers carefully etched the gel into thin cables to form artificial tendons. They attached two tendons to either end of a small sample of muscle tissue, which they grew using lab-standard techniques. They then wrapped each tendon around a small post at the end of each finger of the robotic gripper — a skeleton design that was developed by MechE professor Martin Culpepper, an expert in designing and building precision machines.

When the team stimulated the muscle to contract, the tendons in turn pulled on the gripper to pinch its fingers together. Over multiple experiments, the researchers found that the muscle-tendon gripper worked three times faster and produced 30 times more force compared to when the gripper is actuated just with a band of muscle tissue (and without any artificial tendons). The new tendon-based design also was able to keep up this performance over 7,000 cycles, or muscle contractions.

Overall, Raman saw that the addition of artificial tendons increased the robot’s power-to-weight ratio by 11 times, meaning that the system required far less muscle to do just as much work.

“You just need a small piece of actuator that’s smartly connected to the skeleton,” Raman says. “Normally, if a muscle is really soft and attached to something with high resistance, it will just tear itself before moving anything. But if you attach it to something like a tendon that can resist tearing, it can really transmit its force through the tendon, and it can move a skeleton that it wouldn’t have been able to move otherwise.”

The team’s new muscle-tendon design successfully merges biology with robotics, says biomedical engineer Simone Schürle-Finke, associate professor of health sciences and technology at ETH Zürich.

“The tough-hydrogel tendons create a more physiological muscle–tendon–bone architecture, which greatly improves force transmission, durability, and modularity,” says Schürle-Finke, who was not involved with the study. “This moves the field toward biohybrid systems that can operate repeatably and eventually function outside the lab.”

With the new artificial tendons in place, Raman’s group is moving forward to develop other elements, such as skin-like protective casings, to enable muscle-powered robots in practical, real-world settings.

This research was supported, in part, by the U.S. Department of Defense Army Research Office, the MIT Research Support Committee, and the National Science Foundation.

This is crazy. Lawmakers in several US states are contemplating banning VPNs, because…think of the children!

As of this writing, Wisconsin lawmakers are escalating their war on privacy by targeting VPNs in the name of “protecting children” in A.B. 105/S.B. 130. It’s an age verification bill that requires all websites distributing material that could conceivably be deemed “sexual content” to both implement an age verification system and also to block the access of users connected via VPN. The bill seeks to broadly expand the definition of materials that are “harmful to minors” beyond the type of speech that states can prohibit minors from accessing­ potentially encompassing things like depictions and discussions of human anatomy, sexuality, and reproduction...

The agency has told recipients of community resilience money to submit paperwork that would bar them from challenging grant cancellations.

"Carbon pricing is not dead," expert says of group led by Brazil with 18 members including China and the EU that have carbon markets.

Billions of dollars divide House and Senate versions of fiscal 2026 Department of Transportation legislation.

A growing number of the world's waterways face overlapping changes from global warming.

The request comes as the Illinois governor and President Trump wage rhetorical battles over immigration enforcement and other issues.

Two lawmakers told the secretary of State that surrendering influence to China on environmental policy would be "deeply misguided."

BlackRock has scaled back “climate engagement in ways that put our investments at risk needlessly,” said New York City's comptroller.

The Nini oil field is getting a second lease on life as a means of permanently storing planet-warming carbon dioxide beneath the seabed.

Energy costs are rising as wholesale power and gas prices fall, pressuring ministers to address how to fund higher grid and policy costs.

Companies are depending on clarity from the EU on the 2035 combustion-engine ban for new vehicles as they plan future investments.

A meter-long flying neon squid (Ommastrephes bartramii) was found dead on an Israeli beach. The species is rare in the Mediterranean.

In a new paper, “Adversarial Poetry as a Universal Single-Turn Jailbreak Mechanism in Large Language Models,” researchers found that turning LLM prompts into poetry resulted in jailbreaking the models:

Abstract: We present evidence that adversarial poetry functions as a universal single-turn jailbreak technique for Large Language Models (LLMs). Across 25 frontier proprietary and open-weight models, curated poetic prompts yielded high attack-success rates (ASR), with some providers exceeding 90%. Mapping prompts to MLCommons and EU CoP risk taxonomies shows that poetic attacks transfer across CBRN, manipulation, cyber-offence, and loss-of-control domains. Converting 1,200 ML-Commons harmful prompts into verse via a standardized meta-prompt produced ASRs up to 18 times higher than their prose baselines. Outputs are evaluated using an ensemble of 3 open-weight LLM judges, whose binary safety assessments were validated on a stratified human-labeled subset. Poetic framing achieved an average jailbreak success rate of 62% for hand-crafted poems and approximately 43% for meta-prompt conversions (compared to non-poetic baselines), substantially outperforming non-poetic baselines and revealing a systematic vulnerability across model families and safety training approaches. These findings demonstrate that stylistic variation alone can circumvent contemporary safety mechanisms, suggesting fundamental limitations in current alignment methods and evaluation protocols...

In late September, the United Kingdom’s Prime Minister Keir Starmer announced his government’s plans to introduce a new digital ID scheme in the country to take effect before the end of the Parliament (no later than August 2029). The scheme will, according to the Prime Minister, “cut the faff” in proving people’s identities by creating a virtual ID on personal devices with information like people’s name, date of birth, nationality or residency status, and photo to verify their right to live and work in the country. 

This is the latest example of a government creating a new digital system that is fundamentally incompatible with a privacy-protecting and human rights-defending democracy. This past year alone, we’ve seen federal agencies across the United States explore digital IDs to prevent fraud, the Transportation Security Administration accepting “Digital passport IDs” in Android, and states contracting with mobile driver’s license providers (mDL). And as we’ve said many times, digital ID is not for everyone and policymakers should ensure better access for people with or without a digital ID. 

But instead, the UK is pushing forward with its plans to rollout digital ID in the country. Here’s three reasons why those policymakers have it wrong. 

Digital ID allows the state to determine what you can access, not just verify who you are, by functioning as a key to opening—or closing—doors to essential services and experiences. 

Mission Creep 

In his initial announcement, Starmer stated: “You will not be able to work in the United Kingdom if you do not have digital ID. It's as simple as that.” Since then, the government has been forced to clarify those remarks: digital ID will be mandatory to prove the right to work, and will only take effect after the scheme's proposed introduction in 2028, rather than retrospectively. 

The government has also confirmed that digital ID will not be required for pensioners, students, and those not seeking employment, and will also not be mandatory for accessing medical services, such as visiting hospitals. But as civil society organizations are warning, it's possible that the required use of digital ID will not end here. Once this data is collected and stored, it provides a multitude of opportunities for government agencies to expand the scenarios where they demand that you prove your identity before entering physical and digital spaces or accessing goods and services. 

The government may also be able to request information from workplaces on who is registering for employment at that location, or collaborate with banks to aggregate different data points to determine who is self-employed or not registered to work. It potentially leads to situations where state authorities can treat the entire population with suspicion of not belonging, and would shift the power dynamics even further towards government control over our freedom of movement and association. 

And this is not the first time that the UK has attempted to introduce digital ID: politicians previously proposed similar schemes intended to control the spread of COVID-19, limit immigration, and fight terrorism. In a country increasing the deployment of other surveillance technologies like face recognition technology, this raises additional concerns about how digital ID could lead to new divisions and inequalities based on the data obtained by the system. 

These concerns compound the underlying narrative that digital ID is being introduced to curb illegal immigration to the UK: that digital ID would make it harder for people without residency status to work in the country because it would lower the possibility that anyone could borrow or steal the identity of another. Not only is there little evidence to prove that digital ID will limit illegal immigration, but checks on the right to work in the UK already exist. This is nothing more than inflammatory and misleading; Liberal Democrat leader Ed Davey noted this would do “next to nothing to tackle channel crossings.”

Inclusivity is Not Inevitable, But Exclusion Is 

While the government announced that their digital ID scheme will be inclusive enough to work for those without access to a passport, reliable internet, or a personal smartphone, as we’ve been saying for years, digital ID leaves vulnerable and marginalized people not only out of the debate and ultimately out of the society that these governments want to build. We remain concerned about the potential for digital identification to exacerbate existing social inequalities, particularly for those with reduced access to digital services or people seeking asylum. 

The UK government has said a public consultation will be launched later this year to explore alternatives, such as physical documentation or in-person support for the homeless and older people; but it’s short-sighted to think that these alternatives are viable or functional in the long term. For example, UK organization Big Brother Watch reported that about only 20% of Universal Credit applicants can use online ID verification methods. 

These individuals should not be an afterthought that are attached to the end of the announcement for further review. It is essential that if a tool does not work for those without access to the array of essentials, such as the internet or the physical ID, then it should not exist.

Digital ID schemes also exacerbate other inequalities in society, such as abusers who will be able to prevent others from getting jobs or proving other statuses by denying access to their ID. In the same way, the scope of digital ID may be expanded and people could be forced to prove their identities to different government agencies and officials, which may raise issues of institutional discrimination when phones may not load, or when the Home Office has incorrect information on an individual. This is not an unrealistic scenario considering the frequency of internet connectivity issues, or circumstances like passports and other documentation expiring.

Any identification issued by the government with a centralized database is a power imbalance that can only be enhanced with digital ID.

Attacks on Privacy and Surveillance 

Digital ID systems expand the number of entities that may access personal information and consequently use it to track and surveil. The UK government has nodded to this threat. Starmer stated that the technology would “absolutely have very strong encryption” and wouldn't be used as a surveillance tool. Moreover, junior Cabinet Office Minister Josh Simons told Parliament that “data associated with the digital ID system will be held and kept safe in secure cloud environments hosted in the United Kingdom” and that “the government will work closely with expert stakeholders to make the programme effective, secure and inclusive.” 

But if digital ID is needed to verify people’s identities multiple times per day or week, ensuring end-to-encryption is the bare minimum the government should require. Unlike sharing a National Insurance Number, a digital ID will show an array of personal information that would otherwise not be available or exchanged. 

This would create a rich environment for hackers or hostile agencies to obtain swathes of personal information on those based in the UK. And if previous schemes in the country are anything to go by, the government’s ability to handle giant databases is questionable. Notably, the eVisa’s multitude of failures last year illustrated the harms that digital IDs can bring, with issues like government system failures and internet outages leading to people being detained, losing their jobs, or being made homeless. Checking someone’s identity against a database in real-time requires a host of online and offline factors to work, and the UK is yet to take the structural steps required to remedying this.

Moreover, we know that the Cabinet Office and the Department for Science, Innovation and Technology will be involved in the delivery of digital ID and are clients of U.S.-based tech vendors, specifically Amazon Web Services (AWS). The UK government has spent millions on AWS (and Microsoft) cloud services in recent years, and the One Government Value Agreement (OGVA)—first introduced in 2020 and of which provides discounts for cloud services by contracting with the UK government and public sector organizations as a single client—is still active. It is essential that any data collected is not stored or shared with third parties, including through cloud agreements with companies outside the UK.

And even if the UK government published comprehensive plans to ensure data minimization in its digital ID, we will still strongly oppose any national ID scheme. Any identification issued by the government with a centralized database is a power imbalance that can only be enhanced with digital ID, and both the public and civil society organizations in the country are against this.

Ways Forward

Digital ID regimes strip privacy from everyone and further marginalize those seeking asylum or undocumented people. They are pursued as a technological solution to offline problems but instead allow the state to determine what you can access, not just verify who you are, by functioning as a key to opening—or closing—doors to essential services and experiences. 

We cannot base our human rights on the government’s mere promise to uphold them. On December 8th, politicians in the country will be debating a petition that reached almost 3 million signatories rejecting mandatory digital ID. If you’re based in the UK, you can contact your MP (external campaign links) to oppose the plans for a digital ID system. 

The case for digital identification has not been made. The UK government must listen to people in the country and say no to digital ID.

Technology is supercharging the attack on democracy and EFF is fighting back. We’re suing to stop government surveillance. We're fighting to protect free expression online. And we're building tools to protect your data privacy.

Help support our mission with new gear from EFF's online store, perfect gifts for the digital rights defender in your life. Take 20% your order today with code BLACKFRI. Thanks for being an EFF supporter!

Liquid Core Dice are perfect for tabletop games. The metal clear-view EFF display tin contains a seven piece set of sharp-edge dice. These glittery dice will show that you roll with the crew protecting our civil liberties online.

Celebrate equity and accessibility with this tactile braille sticker that depicts the fiery figure of Lady Justice with braille characters reading "justice" and "EFF." With this embossed sticker, you won't just be showing off your support for justice, you'll actually be able to feel it.

Applaud reproductive rights with this gift bundle hailing your data privacy and personal freedom. The bundle includes all items featuring our mascot for choice and privacy, Lady Lock: the "My Body, My Data, My Choice" tote bag, a "Honey, I Encrypt Everything" sticker, and a heat-changing mug that reveals its secret slogan when hot.

Explore the mysteries of the web with an iconic Bigfoot de la Sasquatch lapel pin—privacy is a "human" right! Continue the journey with with campfire tales from The Encryptids, the rarely-seen creatures who’ve become digital rights legends. This sparkling cloisonne pin measures 1.5 inches tall and features a high quality spring backing.

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Nature Climate Change, Published online: 27 November 2025; doi:10.1038/s41558-025-02524-6

Author Correction: Increasing risk of mass human heat mortality if historical weather patterns recur

Nature Climate Change, Published online: 27 November 2025; doi:10.1038/s41558-025-02496-7

The authors model near-ground and within-canopy microclimates in a tropical montane rainforest. They show that short-distance shifts towards dense vegetation or vertically downwards in canopies reduce velocities, highlighting that structurally complex ecosystems may provide short-term climate refuges.