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.

What actually ended the Permian Period some 251 million years ago? Most Earth scientists think gradual sea fall, climate change, oceanic anoxia, and volcanism were the causes. But that's not so. A ...

Land animals, ecosystems walloped after Permian dieoff Date: October 27, 2011 Source: Brown University Summary: Researchers have concluded the mass extinction that ended the Permian Period was ...

That set includes the end-Permian, the greatest extinction event of all time, which occurred around 252 million years ago and eliminated 95 percent of marine species.

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.