Earth has a flair for dramatic resets, though it usually takes millions of years to deliver them. Over its long history, life has been knocked back by volcanic eruptions, climate swings, changing seas ...

(CNN) — Humans have wiped out more than 100 species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass ...

Threats from deforestation, pollution, hunting, and climate change are contributing to the extinction of endangered species.

The term “mass extinction” conjures up apocalyptic images of the world coming to an end, but a massive event like this can be a much slower process than many people realize. By definition, a mass ...

These ancient arthropods were thriving hundreds of millions of years before dinosaurs, and they kept their design through every mass extinction that followed. A hard shell, a body plan that worked, ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact periods in history when it happened are less well known. Was it a single ...

May 23rd is World Turtle Day. It’s the perfect time to celebrate what makes these creatures so amazing and focus on what you ...

A fire-bellied newt (Cynops ensicauda) on Amami Island in Japan. Previously thought to be extinct, the newt and others in its genera are still alive. (John J. Wiens/University of Arizona) (CN) — For ...

For millions of years, large herbivores like mastodons and giant deer shaped the Earth's ecosystems, which astonishingly stayed stable despite extinctions and upheavals. A new study reveals that only ...

Learn more about the newly identified species from the Arctic that were part of one of the longest living mammal groups on ...