Everyone knows about the meteor that ended the age of dinosaurs - except that it wasn’t the biggest extinction event. Long ...

Earth's history is marked by devastating mass extinctions, each one reshaping life as we know it. Now, experts warn that ...

Iridium is relatively rare in Earth's crust but is more abundant in stony meteorites, which led the Alvarezs to conclude that the mass extinction was caused by an extraterrestrial object.

The Earth is rapidly warming, and similar climate upheavals over 300 million years ago once triggered massive fluctuations in ...