Prime numbers are sometimes called math’s “atoms” because they can be divided by only themselves and 1. For two millennia, ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Six seven’ sends teens into a frenzy that schools have been powerless to stop. ‘It’s like throwing catnip at cats.’ ...