Around seventy thousand years ago, Homo sapiens began their first adventure out of Africa. As they wandered the globe, they clashed and interbred with their human cousins. There were countless dramas of which we will never know, each filled with wars, alliances, loves, and jealousies. What we know is that this clashing was unbalanced and eventually favored only a single species. Through slaughter or interbreeding or both, by forty thousand years ago, there was only one species of humans left: us.
