When Humans Learned to Live Everywhere
Geography is one of the things that sets apart modern humans. Our closest living relatives — chimpanzees and bonobos — are confined to a belt of Central African forests. But humans have spread across every continent, even remote islands. Our species can thrive not only in forests, but in grasslands, swamps, deserts and just about every other ecosystem dry land has to offer. In a study published on Wednesday, scientists pinpoint the origin of our extraordinary adaptability: Africa, about 70,000