Earth’s sixth mass extinction is already happening — and it is rapidly accelerating, researchers warned in a study out this week in the Proceedings of the National Academy of Sciences (PNAS) journal.
Earth’s sixth mass extinction is already happening — and it is rapidly accelerating, researchers warned in a study out this week in the Proceedings of the National Academy of Sciences (PNAS) journal.
The source I dug up while writing that comment said 10.9 billion, but since these are projections they vary a bit depending on the assumptions that go into them. The important underlying point is that the line eventually goes back down again.