Researchers identified an early mammal ancestor whose eggs may have helped it survive the Great Dying 250 million years ago.

In school, we learned about the asteroid that wiped out an estimated 76% of all creatures. Scientists now call this the fifth ...

About 445 million years ago, Earth’s oceans turned into a danger zone. Glaciers spread across the supercontinent Gondwana, and shallow seas shrank fast. Ocean chemistry also shifted hard. In what ...

New technology has helped a team of scientists uncover more than 20 microscopic fossils, including a species previously ...

Add Yahoo as a preferred source to see more of our stories on Google. A skeleton of a Dodo. - Kirsty Wigglesworth/AP Humans have wiped out hundreds of species — with many more on the brink or ...

Detailed imaging of a 250-million-year-old fossil has revealed the first proof that the ancestors of mammals laid eggs. The ...

(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 ...

The Cretaceous–Paleogene (K–Pg) mass extinction event, marking the boundary between the Cretaceous and Paleogene periods approximately 66 million years ago, stands as one of the most profound ...

A handful of plankton fossils buried in a small chunk of rock show that the oceans were teeming with life before the Late ...

Record low levels of Antarctic sea ice are having grim consequences for penguins yet to grow waterproof feathers ...

Almost a hundred new animal species that survived a mass extinction event half a billion years ago have been discovered in a small quarry in China, scientists revealed Wednesday. The asteroid that ...

Almost all life on land and in the ocean was wiped out during "The Great Dying," a mass extinction event at the end of the Permian Era about 250 million years ago. New evidence suggests that the Great ...