Extinction Of The Dinosaurs In recent years, scientists have begun to challenge the popular K-T extinction event theory advanced by Nobel laureate physicist, Luis Alvarez. In 1990, he found evidence of a large impact resulting in an Extinction Level Event (E.L.E) in what is now Chicxulub, Mexico. His theory that this E.L.E. wiped out the dinosaurs some 65 million years ago was soon adopted. However, an increasing number of...... Source : Chemistry Lecture
