A new study highlights both the promise and the limitations of gene editing, as a highly lethal form of avian influenza continues to spread around the world.
The Ocucaje Desert, where paleontologists recently unearthed the ancient skeleton of the world’s heaviest animal, is being overtaken by human settlement.
Researchers believed there were eight species of the strange mammals. But a ninth was identified genetically, although no one knew it was a separate species in the wild.