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Oxygen may have helped complex life arise a billion years early

Oxygen may have helped complex life arise a billion years early

23 April 2018

Earth’s air suddenly got a lot more oxygen around 1.6 billion years ago and that could have triggered the evolution of large multicellular organisms
Worst mass extinctions may have been caused by rising mountains

Worst mass extinctions may have been caused by rising mountains

23 April 2018

A pair of mass extinctions struck in quick succession just before the dinosaur era, and the birth of a mountain range in South Africa may have been partly to blame

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