The 25 Biggest Turning Points in Earth's History | BBC Earth - 0 views
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Rhondda Powling on 28 Jul 15The BBC have come up with what they think are the 25 Biggest Turning Points in Earth's History. Our planet has existed for 4.5 billion years, and a lot has happened but these turning points shaped our world significantly. They include leaps forward in evolutionary leaps, devastating asteroid collisions, mass extinctions and finally the coming of man