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

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

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.

Mark Zuckerberg built a future that nobody wanted. Tech bosses are repeating his mistake

Brainstorm - Richard Scolyer

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

Deciphering Glyph, the blog of Glyph Lefkowitz.

The H5N1 virus has now reached every continent on the planet. What does it mean for some of the world’s unique species?

By Lee Vinsel

I'm reposting this essay I wrote in 2021 because the online blogging platform Medium has apparently changed its policies and people are having trouble accessing the original. Hopefully, I'll find a better, more durable solution soon. I'm reposting it unaltered, even though I would unsurprisingly do some