How activity in Earth’s mantle led the ancient ancestors of elephants, giraffes, and humans into Asia and Africa

What roils beneath Earth’s surface may feel a world away, but the activity can help forge land masses that dictate ocean circulation, climate patterns, and even animal activity and evolution. In fact, scientists believe that a plume of hot rocks that burst from Earth’s mantle millions of years ago could be an important part in the story of human evolution.

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