A New History of Life

Snowball Earth—Another Crisis (1520x11)

Ημερομηνία προβολής: Ιαν 01, 2013

Follow the clues that suggest Earth went through a snowball phase around 635 million years ago, nearly ending life’s story. How did it happen? How was it reversed? And above all, how did photosynthetic life survive if it was trapped beneath the ice for millions of years?