In a stunning new study, geneticists in Japan have revealed how injecting a 40,000-year-old Neanderthal gene into mice has led to profound changes in their skeletal structure. This experiment, ...

Nine thousand years ago, humans began domesticating cats. Nine hundred years ago, before the advent of intentional cat breeding, a genetic mutation gave rise to the first orange cat. Days ago, ...

For nearly a century, scientists have been puzzling over fossils from a strange and robust-looking distant relative of early ...

For decades, the dream of fixing harmful mutations in mitochondrial DNA felt out of reach. Scientists have long known these ...