Clues to How Homo Sapiens Conquered Earth

How did our species, Homo sapiens, disperse so far and wide? Other human species colonized Africa, Europe and Asia but only our kind managed to spread across the entire globe. Perhaps the emergence in our species of a special propensity for cooperation and the invention of a game-changing technology—projectile weaponry—powered our ancestors’ march across the planet, allowing them to go places no member of the human family had gone before.

Read the full story at Scientific American ➞