Cosmic accidents: Killer asteroid with a silver lining - life - 01 October 2010 - New Scientist: "A 10-kilometre-wide rock did for the dinosaurs, but smashed open a window of opportunity for unimpressive little animals called mammals
The upping of atmospheric oxygen was followed by a frenzy of evolutionary innovation, during which most of the animal groups known today popped up. By 350 million years ago, the coal beds laid down in the carboniferous period speak of a world covered in lush greenery, too. Soon this verdant Earth became home to animals of a size never seen before: the dinosaurs. The age of the reptiles lasted for more than 160 million years. It took an extraterrestrial intervention to clear the way for a new world order."
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment