Driving American battery innovation forward
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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 […]
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The Journey of a Token: What Really Happens Inside a Transformer
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Large language models (LLMs) are based on the transformer architecture, a complex deep neural network whose input is a sequence of token embeddings.
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Exploring how AI will shape the future of work
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“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 […]
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Guest post: Why carbon emissions from fires are significantly higher than thought
Scientists have long known that fires release substantial amounts of greenhouse gases and pollutants into the atmosphere. However, estimating the total climate impact of fires is challenging. Now, new satellite data has shed fresh light on the complex interplay between the climate and fires in different landscapes around the world. It suggests that global emissions […]
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DeBriefed 28 November 2025: COP30’s ‘frustrating’ end; Asia floods; UK ‘emergency’ climate event
Welcome to Carbon Brief’s DeBriefed. An essential guide to the week’s key developments relating to climate change. This week ‘Lukewarm’ end to COP30 BYE BELÉM: The COP30 climate talks in Belém ended last weekend with countries agreeing on a goal to “triple” adaptation finance by 2035 and efforts to “strengthen” climate plans, Climate Home News reported. […]
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Revealed: Leak casts doubt on COP30’s ‘informal list’ of fossil-fuel roadmap opponents
A confused – and, at times, contradictory – story has emerged about precisely which countries and negotiating blocs were opposed to a much-discussed “roadmap” deal at COP30 on “transitioning away from fossil fuels”. Carbon Brief has obtained a leaked copy of the 84-strong “informal list” of countries that, as a group, were characterised across multiple […]
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What the Budget statement means for different sectors
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One year on: Rachel Reeves in 2024 (image credit: Fred Duval / Shutterstock). Observers in sectors such as waste, energy and construction responded to Rachel Reeves’ Autumn Budget, delivered on 26 November. The statement talked much about growth but seemed to offer little to fund it. The main headline-grabber was a £150 cut to the […]
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China Briefing 27 November 2025: COP30 wraps; Climate and critical minerals at G20; Coal use up
Welcome to Carbon Brief’s China Briefing. China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here. Key developments China called for ‘strengthened’ climate cooperation ‘URGENT ACTION’: As the COP30 climate talks in Brazil drew to a close (see today’s spotlight below), world leaders gathered […]
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UK budget 2025: Key climate and energy announcements
UK chancellor Rachel Reeves has announced new measures to cut energy bills alongside a “pay-per-mile” electric-vehicle levy as part of Labour’s second budget. The policy changes are expected to cut typical household bills by around £134 per year, amid intense political scrutiny of energy prices and a government pledge to reduce them. This cut is […]
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COP30: Key outcomes for food, forests, land and nature at the UN climate talks in Belém
The COP30 climate summit – held in the city of Belém, on the edge of the Amazon rainforest – saw the Brazilian presidency launch a new forest fund and promise a “roadmap” to put an end to deforestation. Almost every country in the world signed off on a final COP30 package called the “global mutirão” […]
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Attacking nature protections with fudged figures is not the solution to slow growth: rivers charity responds to Hinkley Point C report
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A 3d illustration of the Hinkley Point C nuclear plant, currently under construction (image credit: gov.uk, OGL) A statement from Mark Lloyd, Chief Executive of The Rivers Trust Yesterday [(25 November)], several prominent newspapers published articles quoting a government-commissioned report into the spiralling costs of EDF’s Hinkley Point C nuclear power station. These articles focused […]
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£25 million Water Efficiency Lab competition aims to drive innovation and cut water use across England and Wales
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Ofwat announced its inaugural Water Efficiency Lab (‘WEL 1’) on 25 November. The £25 million challenge-led competition is intended to unlock and scale innovations that reduce water use across England and Wales. The first year of the competition, offering £5 million in total funding and up to £1.5 million for individual projects, is inviting innovators […]
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Air quality gains expected as fovernment backs ‘Environmental Factors’ Amendment to Devolution Bill
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Stronger legal duties on regional leaders to tackle air pollution and other environmental risks are set to be introduced after the Government approved a key amendment to the English Devolution and Community Empowerment Bill. The Bill, introduced in July, aims to shift decision-making power away from central government and towards local and regional bodies in […]
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Low-carbon and smokeless fuels receive Made in Britain trademark
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This article contains sponsored content. Homefire and ecoke, two pioneering brands under the Invica Industries portfolio, have officially been awarded the Made in Britain trademark, recognising their commitment to sustainable manufacturing, innovation, and the strength of British industry. The accreditation celebrates the fact that both ecoke, a reduced carbon alternative for industrial processing and production, […]
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Researchers discover a shortcoming that makes LLMs less reliable
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Large language models (LLMs) sometimes learn the wrong lessons, according to an MIT study. Rather than answering a query based on domain knowledge, an LLM could respond by leveraging grammatical patterns it learned during training. This can cause a model to fail unexpectedly when deployed on new tasks. The researchers found that models can mistakenly […]
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K-Means Cluster Evaluation with Silhouette Analysis
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Clustering models in machine learning must be assessed by how well they separate data into meaningful groups with distinctive characteristics.
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MIT scientists debut a generative AI model that could create molecules addressing hard-to-treat diseases
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More than 300 people across academia and industry spilled into an auditorium to attend a BoltzGen seminar on Thursday, Oct. 30, hosted by the Abdul Latif Jameel Clinic for Machine Learning in Health (MIT Jameel Clinic). Headlining the event was MIT PhD student and BoltzGen’s first author Hannes Stärk, who had announced BoltzGen just a few days […]
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Webinar: Carbon Brief’s third ‘ask us anything’ at COP30
Following the end of COP30, Carbon Brief’s journalist answered a range of questions exclusively asked by its Insider Pass holders. COP30 officially closed at 8:44pm on Saturday evening, with the final gavel coming down and more than 150 pages of decision text adopted at the summit in Belém, Brazil. Less than 24 hours later, Carbon […]