A straightforward conjecture about runners moving around a track turns out to be equivalent to many complex mathematical ...

In artificial intelligence research, scientists often describe parts of a model using simple algorithmic language. A small ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

I spent months studying how authoritarians like Trump lose. The answer is shockingly simple.