About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas survived. On land ...

That distinction belongs to the Permian-Triassic extinction or the Great Dying. During this dramatic period of climate change about 252 million years ago, about 80 to 90 percent of all species on ...

Alligator vs Crocodile' might sound like the title of the latest Hollywood blockbuster. But it became a reality in Florida's Everglades National Park last week, where a crocodile and an ...

Get Instant Summarized Text (Gist) The Permian mass extinction, 252 million years ago, was linked to a 10°C rise in global temperatures due to massive volcanic CO 2 emissions. This led to climate ...