To date, the Earth has had five mass extinction events, with the most famous one being the giant asteroid that wiped out the dinosaurs 66 million years ago. The devastation caused by the asteroid was historic. Seventy six percent of the world’s species were wiped out by the asteroid impact and its subsequent after effects. […]
Species are disappearing at more than100 times the natural rate, according to Stanford University s Paul Erhlich, who said it was yet more evidence the world is facing a sixth mass extinction.