The Mesozoic Era extinctions formed the world as we know it today. Read about what caused them and which animals survived.

The Mesozoic Era began with the Earth’s worst-ever extinction event. It is referred to as the Permian-Triassic extinction event because it spanned these geological Periods. You may also see it ...

Most people think a meteor killed the dinosaurs - but that wasn’t Earth’s biggest extinction. The Permian-Triassic extinction ...

Scientists have predicted that Earth will undergo a mass extinction in 250 million years, with extreme heat and rising CO2 ...

Fossils before and after the end-Permian extinction "go from ... even those seen in the earliest Triassic, which has been the greatest homogenization event to date," the study authors wrote.

Fossils before and after the end-Permian extinction "go from richly diverse ... composition that surpass even those seen in the earliest Triassic, which has been the greatest homogenization event to ...

The idea that extreme heat could one day cause a mass extinction and end the dominance of humans is not as farfetched as it ...