The descent of stable societies into ones of endemic violence rarely produces anything but new forms of tyranny and terror.

Everyone loves to remember how blogs were so much better than social media, but the truth is a bit more complicated.

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

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

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.

Read the declaration and add your name.

Physicists have long struggled with their goal of making gravity a quantum force. A radical post-quantum approach might solve that problem – and clear up other cosmic mysteries, too

A Little Tooth - Your baby grows a tooth, then two,

What can a rare disorder tell us about human behavior?

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