Thousands of years ago, ancient Homo sapiens undertook a treacherous journey, crossing hundreds of km of ice over the Bering Strait to the unknown world of the Americas. Now, a new study suggests that these people carried something surprising with them — a variant of the MUC19 gene inherited from Denisovans, which may have helped humans adapt to the challenges of their new home. An artist’s concept of a Penghu Denisovan walking under the bright...
