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Three big things we still don’t know about AI’s energy burden

Three big things we still don’t know about AI’s energy burden

Earlier this year, when my colleague Casey Crownhart and I spent six months researching the climate and energy burden of AI, we came to see one number in particular as our white whale: how much energy the leading AI models, like ChatGPT or Gemini, use up when generating a single response. ...

AI is changing the grid. Could it help more than it harms?

AI is changing the grid. Could it help more than it harms?

The rising popularity of AI is driving an increase in electricity demand so significant it has the potential to reshape our grid. Energy consumption by data centers has gone up by 80% from 2020 to 2025 and is likely to keep growing. Electricity prices are already rising, especially in places where...

Help! My therapist is secretly using ChatGPT

Help! My therapist is secretly using ChatGPT

In Silicon Valley’s imagined future, AI models are so empathetic that we’ll use them as therapists. They’ll provide mental-health care for millions, unimpeded by the pesky requirements for human counselors, like the need for graduate degrees, malpractice insurance, and sleep. Down here on Earth,...

The Download: introducing our 35 Innovators Under 35 list for 2025

The Download: introducing our 35 Innovators Under 35 list for 2025

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. Introducing: our 35 Innovators Under 35 list for 2025 The world is full of extraordinary young people brimming with ideas for how to crack tough...

Why basic science deserves our boldest investment

Why basic science deserves our boldest investment

In December 1947, three physicists at Bell Telephone Laboratories—John Bardeen, William Shockley, and Walter Brattain—built a compact electronic device using thin gold wires and a piece of germanium, a material known as a semiconductor. Their invention, later named the transistor (for which they...

How Trump’s policies are affecting early-career scientists—in their own words

How Trump’s policies are affecting early-career scientists—in their own words

This story is part of MIT Technology Review’s “America Undone” series, examining how the foundations of US success in science and innovation are currently under threat. You can read the rest here. Every year MIT Technology Review celebrates accomplished young scientists, entrepreneurs, and...

Meet the Ethiopian entrepreneur who is reinventing ammonia production

Meet the Ethiopian entrepreneur who is reinventing ammonia production

Iwnetim Abate is one of MIT Technology Review’s 2025 Innovators Under 35. Meet the rest of this year’s honorees.  “I’m the only one who wears glasses and has eye problems in the family,” Iwnetim Abate says with a smile as sun streams in through the windows of his MIT office. “I think it’s...