A Guardian investigation into the U.S. overdose slowdown found that national declines masked sharp local disparities. Here's how the reporting team got the story.

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A new comedic play and a 20-year neurology study explore what we can do to prevent dementia and cognitive decline.

Operation Epic Fury will make it more difficult for the United States to conduct genuine diplomacy in the future.

March 3, 2026 • More than three years after ChatGPT debuted, AI has become a part of everyday life — and professors and students are still figuring out how or if they should use it. March 3, 2026 • ...

A new simulation shows large amounts of hydrogen in our planet’s core. Scientists report on what they found in 290-million-year-old vomit. Plus, a comedic play and a 20-year neurology study explore ...