A mass extinction event occurred 30M years ago
They now have proof that 30 million years ago...Long before plastic straws and CO2 emissions , climate change causes the earth to cool so fast it froze over and killed a bunch of animal species.
Nice to know that the earth has been going thru these cyclical hot and cold spells a long time before man started to burn fossil fuels and use plastics. So I don't feel so guilty anymore...a warming planet for the last 30 million years is a naturally occurring event and why we're not covered in ice. HaHa..
Quote:
Climate change wiped out nearly two thirds of the mammal species in Africa and the Arabian Peninsula in a mass extinction event 30 million years ago that researchers have only just learned about now.
The Earth grew colder, ice sheets expanded, sea levels dropped, forests changed to grasslands, and carbon dioxide became scarce, the researchers said. In Asia and Europe, nearly two-thirds of the species known at that time went extinct.
According to a new study, published in the journal Communications Biology, the Earth’s climate dramatically shifted during the transition between the geological periods called the Eocene and Oligocene.