News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   Getty Images |   It's Elemental... In a study published this week in the journal Nature Geoscience, scientists argue that each time in Earth's geologic history a supercontinent assembled, it created huge mountain ranges. As the mountains eroded, the world's rivers washed them into the sea, releasing nutrients used by bacteria to grow in tremendous numbers, flooding the atmosphere with oxygen.   « back to article

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