These are math’s most famous open questions. Solve one, and you’ll win a $1-million prize—but it’s only happened once since ...

An idea from topology explains why you can never get rid of your cowlicks—and, oddly enough, it’s critical in nuclear fusion ...

Are two sets of data genuinely different, or is it because of randomness? This question, known as the two-sample testing problem, becomes notoriously difficult in modern datasets, because they are ...