


How Trump’s U-turn on chips could unleash Chinese AI
China has top-flight models. But export controls left it struggling to run them
Six months ago DeepSeek, a Chinese artificial-intelligence (AI) firm, wowed the world with the v3 model and its successors. For the first time, a country other than America—and one that America had cut off from the supply of top-of-the-range semiconductor chips—was producing open-source models that rivalled those designed in Silicon Valley.
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Even the sight of an infection can trigger an immune response
The phenomenon could be harnessed to boost immunotherapy

Can you overcome an allergy?
Treatment is improving, even for the most dangerous

Inside the top-secret labs that build America’s nuclear weapons
To maintain the bombs, and build new ones, scientists are pushing the frontiers of physics
Fragmentary Latin inscriptions can be completed with AI
A new model is finding connections spanning the Roman world
What does it take to make a nuclear weapon?
Introducing “The Bomb”, our new four-part podcast series on the past, present and future of America’s nuclear stockpile
Do probiotics work?
For a healthy microbiome, eating your greens is a surer bet