Read On My fine Peckered Friends:single, gigantic asteroid slammed into Earth 65 million years ago, dooming the dinosaurs and many other species, scientists said on Thursday in a new study rebutting theories that multiple impacts did the deed.
An examination of rock sediments drilled from five sites at the bottom of the Atlantic Ocean strongly supports the notion...
I think this has been the most widely accepted theory. Finding that iridium ring helped seal the deal. I just hope we humans don't have to face the same problem in the future.