Guilty of Killing the Dinosaurs

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Source:  Lynn Yarris, Lawrence Berkeley National Laboratory
Excerpt: …an international panel of 41 experts in geology, paleontology  and other related fields, after an exhaustive review of the data, declared an end to a 30 year controversy over what triggered the extinction of the dinosaurs – an asteroid or volcanoes. The panel ruled in favor of the asteroid... the size of San Francisco, traveling faster than a bullet, slammed into Earth ...delivered a destructive blast thousands of times more powerful than the combined yield of all the world’s nuclear weapons, setting off earthquakes greater than 11 in magnitude and widespread tsunamis, and shrouding the globe for years in a thick cocoon of sky-blackening dust and debris....

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