In the past decade, new studies of ancient DNA from fossils have shown that, until as recently as 40,000 years ago, our ancestors shared the planet with two close relatives, the Neanderthals and a mysterious group called the Denisovans. Both of those groups became extinct, but traces of their DNA remain in the genomes of modern humans. Meanwhile, researchers are discovering diverse types of human ancestors who were living at the same time in the same fossil sites millions of years ago, suggesting that we were never alone—that there were always other types of hominins alive in Africa and elsewhere on the planet until recently. Join us for a discussion with Ann