This piece explains the build up of evidence that supports the theory that a cooling event called the Younger Dryas, round 12,000 years ago was a result of an asteroid strike. Of course it is already now accepted that around 65 million years ago the dinosaurs were wiped out by a meteor strike. Clearly there is still much more to learn.
via climate science
October 15, 2019 at 01:30AM
Iowa Climate Science Education 