Surprises in the Chicxulub Tale of Dino Extinction
June 5, 2018
Did an asteroid hit in the Yucatan explain the demise of the dinosaurs? New drilling in the crater has brought some surprises.
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Evaluating the Chicxulub Impact Dinosaur Extinction Hypothesis
February 10, 2013
Science Magazine claimed the Mexican crater named Chicxulub is the smoking gun of the dinosaurs' demise, and the media fell in line. Are there reasons to doubt the story?
Paradigm Shift: Impact Didn't Kill Dinosaurs
April 24, 2012
A new study casts doubt on whether asteroid impacts led to extinctions. It's based on re-interpreting geological evidence used to identify impacts. This finding, if sustained, would undermine the theory that an impact killed off the dinosaurs and a later impact led to the extinction of many large mammals. Even more significant, an overturn of the impact hypothesis would illustrate that scientists are capable of going off on wrong tangents for decades.