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, ...

Scientists tracking the Pacific’s most volatile margins are watching a familiar pattern sharpen into something more urgent, as clusters of earthquakes and restless volcanoes hint at shifting stresses ...

Numerous batches of thunderstorms roll around the outside of hot domes of air. Michigan is easing into that line of thunderstorms over the next few days. We meteorologists like this weather pattern ...