Cosmic radiation comes from space. Only a small amount reaches the Earth's surface, but exposure is greater for people flying at high altitudes.

A decades-old rule about human friendship turns out to be built on such shaky math that it could just as easily be 2 or 520.

Former British Prime Minister Gordon Brown shares what it was like to run a country, the effect it had on his personal life and what life is like after being in

I admit it. I took the bait. Charity Majors made an appearance on Gergely Orosz’s show called “Stop being skeptical about AI for development”. I listened to the podcast—I don’t listen to many tech podcasts—and I don’t think she ever said to stop being skeptical. Not directly anyways. Great title, though. Good for engagement. “Stop being skeptical” is a phrase guaranteed to rustle any skeptic’s jimmies. A whole lotta provocation, not a lotta substance. 10/10. No notes.

The violent response to an attempted murder would have happened regardless of Musk, Lee Hurley writes.

Why did Joan Didion love Barry Goldwater but hate Ronald Reagan? Historian Sam Tanenhaus helps make sense of Didion's conservatism.

Andy Weir is the New York Times bestselling author of The Martian, Artemis, Project Hail Mary, and Cheshire Crossing.

Brainstorm - Richard Scolyer