Scientists Hunt for Meteor Crash Clues in 200-Million-Year-Old Murder Mystery (SPACE.com)
SPACE.com - Mass extinctions are a relatively common theme in the history and evolution of life on Earth, and the most famous one is the extinction of the dinosaurs 65 million years ago. A plethora of research has been conducted to determine how the dinosaur era ended, generating theories of massive volcanic eruptions, catastrophic climate change and giant impactors from space.