Human Beings Almost Vanished from Earth in 70,000 B.C
Alternatively: "how human beings rose from the lesser hominids in 70,000 B.C.E."<p>There's a serious theory it was this bottleneck where humans were confined to environments without natural preditors (seaside cliffs like those near Cape Town) and where social interaction was a necessity. Those with higher intelligence, particularly social intelligence, would scored more mates in that environment. And thus we had a runaway intelligence arms race that separated modern humans from their immediate hominid ancestors.