Giant Elephants Once Roamed the Earth. We Now Know What Killed Them

Giant ancient animals known as megafauna, originally thought to have gone extinct due to the arrival of human beings, have now been found to have perished for other reasons.
In a paper published in the journal Science on Thursday, researchers describe how African and Arabian megafauna, namely giant elephants, actually were wiped out by climate change, in a process that began long before humans arrived on the scene.
Giant Elephants Once Roamed the Earth. We Now Know What Killed Them