In September 2025, an X post viewed over 1 million times claimed the world's biggest meteorite impact crater was in Mexico and included a video of the purported site. The video an ...

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, ...

Just months ago, the world’s largest iceberg weighed about a trillion tons and covered an area nearly the size of Anchorage, Alaska. Now it’s less than half that—and rapidly disappearing. In recent ...