Watch Humans Conquer the Planet In 6 Minutes - D-brief
▻http://blogs.discovermagazine.com/d-brief/2016/11/10/human-population-spread-across-planet
When humans first emerged from Africa 200,000 years ago, we weren’t much more than slightly brainier hominids. It would take time for us to distinguish ourselves from the rest of the species vying for dominance over the planet.
But once we got a toehold — oh, boy did we take off. Humans leveraged a few key innovations — fire, weapons, agriculture — into the beginnings of an unrivaled global empire.