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How we picked promising climate tech companies in an especially unsettling year

MIT Technology Review’s reporters and editors faced a dilemma as we began to mull nominees for this year’s list of Climate Tech Companies to Watch. How do you pick companies poised to succeed in a moment of such deep uncertainty, at a time when the new Trump administration is downplaying the dangers...

2025 Climate Tech Companies to Watch

Bill Gates: Our best weapon against climate change is ingenuity

It’s a foregone conclusion that the world will not meet the goals for limiting emissions and global warming laid out in the 2015 Paris Agreement. Many people want to blame politicians and corporations for this failure, but there’s an even more fundamental reason: We don’t have all the technological...

2025 Climate Tech Companies to Watch: HiNa Battery Technology and its effort to commercialize salt cells

HiNa Battery Technology is a trailblazer in developing and mass-producing batteries using sodium, a widely available element that can be extracted from sea salt. The startup’s products—already powering small vehicles and energy storage plants in China—provide a valuable alternative to lithium-based...

Banking industry’s net zero alliance shuts down amid faltering climate commitments

NZBA had nearly 150 members but banks began leaving when Trump was re-elected on promise to ‘drill, baby, drill’

Online attacks threaten major climate-friendly diet report

A major scientific update to one of the most influential food and planetary health reports of the past decade is in the crosshairs of a pro-meat misinformation campaign.

There Is No Green Transition Without Consequences

A new book argues that simply replacing fossil-fuel extraction with critical-mineral mining is no way out of the climate crisis.

The EPA Is Ending Greenhouse Gas Data Collection. Who Will Step Up to Fill the Gap?

With the agency no longer collecting emissions data from polluting companies, attention is turning to whether climate NGOs have the tools—and legal right—to fulfill this EPA function.

'Alternative Nobel Prize' goes to Pacific climate activists

A student group that took the issue of climate justice to the world's top court has received a prestigious award for its work. Activists from Myanmar, Sudan and Taiwan were also honored with the Right Livelihood prize.

Right Livelihood prize goes to Pacific climate activists

A student group that took the issue of climate justice to the world's top court has received a prestigious award for its work. Activists from Myanmar, Sudan and Taiwan were also honored with the Right Livelihood prize.

Toyota adds another $1.5B to its bet on startups at every stage

Toyota made two announcements that reflect the automaker's growing interest in startups working on mobility, climate, AI, sustainability, and industrial automation.

Gli Usa dell’era Maga negano il climate change, ma ora un rapporto sfida il conformismo istituzionale

Nonostante gli Stati Uniti siano trionfalmente entrati nell’era MAGA, negazionista climatica per missione divina come direbbe il grande John Belushi, la National Academy of Sciences sfida il conformismo istituzionale, pubblicando un rapporto poco confortante*. Lo sguardo è rivolto agli Stati Uniti,...

Powering HPC with next-generation CPUs

For all the excitement around GPUs—the workhorses of today’s AI revolution—the central processing unit (CPU) remains the backbone of high-performance computing (HPC). CPUs still handle 80% to 90% of HPC workloads globally, powering everything from climate modeling to semiconductor design. Far from b...

Trump’s Energy Department forbids staff from saying ‘climate change’ or ‘green’

A Trump appointee emailed Office of Energy Efficiency and Renewable Energy employees last week with a long list of banned words.

Environmental damage threatens prosperity in Europe

Despite progress in climate change action, Europe's environment is being seriously degraded, according to a new report. Researchers say environmental damage threatens competitiveness and quality of life on the continent.

The Download: AI to detect child abuse images, and what to expect from our 2025 Climate Tech Companies to Watch list

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. US investigators are using AI to detect child abuse images made by AI Generative AI has enabled the production of child sexual abuse images to skyrocket. Now the...

Coming soon: Our 2025 list of Climate Tech Companies to Watch

The need to cut emissions and adapt to our warming world is growing more urgent. This year, we’ve seen temperatures reach record highs, as they have nearly every year for the last decade. Climate-fueled natural disasters are affecting communities around the world, costing billions of dollars.  That’...

The current war on science, and who’s behind it

A vaccine developer and a climate scientist walk into a bar write a book.

Dear LA, you deserve better than the Clippers’ carbon scandal

We watched LA burn this year. If you're not from around here, you might have seen it unfold in the news like so many other infernos. Neighborhoods in ashes. People in shock. I was nearby when it happened in January, visiting home from New York to attend a family member's funeral. As a climate journa...

Tesla asks EPA not to roll back emissions rules as Trump calls climate change a ‘con job’

The company's regulatory policy team is trying to clean up a mess that CEO Elon Musk spent $300 million to help create.

America's blame game over Canada's wildfire smoke misses the point, experts say

US officials have blamed Canada for not doing enough to stop its wildfire smoke from wafting south. Climate experts say it’s not so simple.

Bank of England urged to do more to tackle climate crisis

Environmental groups mark 10 years since Mark Carney’s ‘short-term horizons’ speech with plea to act ‘while there’s still time’

Nations deliver new climate targets ahead of climate summit

With just weeks to go until the international climate conference, nations are stepping up to submit new climate targets for 2035. But will they be enough to prevent a climate catastrophe?

State of climate change: How healthy is our planet?

Scientists say we've already exceeded seven of nine planetary boundaries contributing to Earth's stability, life support and resilience. This poses a risk, but it's not all bad news.

Fact check: Trump repeats false claims at speech before UN

In his speech before the United Nations General Assembly, US President Donald Trump repeated several false claims about him ending wars, and took aim at renewables, climate science, and even the UN's renovation bill.

Fact check: Trump’s UN Speech: Wars, wind turbines, and renovation myths

At the United Nations, President Trump repeated long-debunked claims about ending wars, renewable energy, climate science, and even the UN’s own renovation bill.

How Al Gore used AI to track 660M polluters

A new tool from Climate Trace allows people to track the path of fine particulate matter, or PM2.5, which causes as many as 10 million deaths annually.

Vanuatu working toward UN vote aimed at fighting fossil fuel industry influence

Ralph Regenvanu, minister of climate change for the Pacific island nation said the step was on ‘behalf of everybody’

The World’s Oceans Are Hurtling Toward a Breaking Point

Climate change, pollution, and fishing are pushing oceans closer to their limits at an unprecedented rate. The pressure of that human impact is expected to double by 2050, according to a new study.

Trump criticises countries' migration and climate policies in scathing UN speech

The US president also takes aim at the UN itself in an address lasting almost an hour.