Lots of oxygen does not necessarily lead to the evolution of advanced life
Sunday, October 20, 2013 - 20:00
in Paleontology & Archaeology
Any textbook will tell you that oxygen is essential for advanced life to evolve. But why did life not explode when oxygen levels rose dramatically 2.1 billion years ago? This became a big question after scientists showed the oxygen content 2.1 billion years ago was probably the same as when life exploded 500 million years ago.