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, ...

Hannah Moulton teaches Algebra 1. But before her 9th graders get started on graphing linear functions or solving quadratic equations, she makes sure that they have a much more basic skill down pat.

The Langlands program has inspired and befuddled mathematicians for more than 50 years. A major advance has now opened up new worlds for them to explore One of the biggest stories in science is ...