Utrecht University In The Netherlands

In a first physical evidence that a sudden dip in temperatures wiped out dinosaurs, a team of scientists has revealed that a massive asteroid hit the earth 66 million years ago, causing "nuclear winter" and the ultimate demise of giant animals.

In a first physical evidence that a sudden dip in temperatures wiped out dinosaurs, a team of scientists has revealed that a massive asteroid hit the earth 66 million years ago, causing "nuclear winter" and the ultimate demise of giant animals.