Eons: The World Before Plate Tectonics

9 minutes 24 seconds

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Long before evolution on Earth kicked in with a vengeance, it seemed to stall completely. From 1.7 billion years ago, for a billion boring years, Earth remained a slimy, near-static world of algae and microbes. But the fact is, this period was anything but boring. In fact, it set the stage for the modern version of plate tectonics. Part of "Eons" series.