Dinosaur Killer Chicxulub Crater To Be Drilled For First Time

All over the Earth, there is a buried layer of sediment rich in iridium called the Cretaceous Paleogene-Boundary (K-Pg.) This sediment is the global signature of the 10-km-diameter asteroid that killed off the dinosaurs--and about 50% of all other species--66 million years ago. Now, in an effort to understand how life recovered after that event, scientists are going to drill down into the site where the asteroid struck--the Chicxulub Crater off the coast of Mexico's Yucatan Peninsula. The end-Cr...