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, ...

Remarkable animal migrations across vast distances, like those of birds and sea turtles, continue to baffle scientists. While magnetoreception, using Earth's magnetic field, is a leading theory, ...

The earliest evidence of an internal ‘GPS’ system in an animal has been identified by researchers, which could help explain how modern birds and fish evolved the ability to use the Earth’s magnetic ...