A wave of new research is forcing paleontologists to reconsider a basic question about life on Earth: when did the first mass ...

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 ...

Waves of extinction have ripped through life on Earth over and over again during its long history. The non-avian dinosaurs ...

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 ...

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 ...

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 ...

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 ...

Mass extinctions, volcanism, and impacts: The geological extinction record : history, data, biases, and testing / Norman MacLeod -- Large igneous provinces and mass extinctions : an update / David P.G ...

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...

Add Yahoo as a preferred source to see more of our stories on Google. After an ancient extinction killed about 85% of marine species, survivors in isolated refuges helped jawed vertebrates diversify ...