The "Great Dying," the biggest extinction the planet has ever seen, happened some 250 million years ago and was largely caused by greenhouse gases in the atmosphere.

Mega El Niños could have intensified the world’s most devastating mass extinction, which ended the Permian Period 252 million years ago, a new study found.

Volcanic eruptions set off a mass extinction 252 million years ago that scientists call “the Great Dying.” The ensuing climate change and acid rain hit life in the oceans hard, with less than ...

After the "Great Dying" at the end of the Permian period, life was slow to recover. The loss of a group of tiny marine organisms might explain why.

Long-standing scientific theory says the event, also called the Great Dying, was an evolutionary setback for Earth’s oceans. Only simple organisms remained, and it took between 5 million and 10 ...

Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst of the five global catastrophic events in Earth’s history, more devastating than the one ...

This tiger-sized, saber-toothed, rhino-skinned predator thrived before the ‘Great Dying’ The extinction event wiped out 80 to 90 percent of Earth’s species and completely changed the ...

During the ‘Great Dying,’ This Saber-Toothed Predator Reigned This ancestor of mammals briefly thrived amid a massive extinction event, hinting at how carnivores may respond to climate change ...

A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the ...

A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the ...