The Earth has had at least five major ice ages, and humans showed up in time for the most recent one. In fact, we’re still in it.

The mass extinction was linked to volcanic activity that resulted from the break-up of the "supercontinent" Pangea.

Scientists say the "unique" fossil find shows they were in fact blooming 10 million years before dinosaurs were wiped out.

The "unique" fossil find shows they were in fact blooming 10 million years before dinosaurs were wiped out.

Three previously unknown species of rodent-like mammals that once scurried alongside dinosaurs in what is now northern Alaska have been identified.

The ecological modeling study shows that many plants face a "high risk" of extinction by the end of the century.

A new study reveals how their disappearance "fundamentally reshaped" food webs for the species that remain today.