Big Picture Science – Hidden History: David Morrison / Impact Extinction

by Gary Niederhoff on March 28, 2015



David Morrison / Impact Extinction
click to listen (trt 3:08)

Part 3 of Hidden History, featuring David Morrison, senior scientist at the NASA Ames Research Center, laying out evidence that an asteroid impact caused the mass extinction that ended the Cretaceous period.

Leave a Comment

This blog is kept spam free by WP-SpamFree.

Previous post:

Next post: