Evidence that Earth’s first mass extinction was caused by critters not catastrophe

Nashville TN (SPX) Sep 03, 2015

In the popular mind, mass extinctions are associated with catastrophic events, like giant meteorite impacts and volcanic super-eruptions. But the world’s first known mass extinction, which took place about 540 million years ago, now appears to have had a more subtle cause: evolution itself.

“People have been slow to recognize that biological organisms can also drive mass extinction,” said —> Read More