Sulphur-crested cockatoos are a familiar, squawking, presence across much of Australia and Melanesia. But according to a genetic study, they are actually two separate species. And while one of those ...

Prescribing physical activity to older adults reduces risk factors for chronic disease and improves functional independence, according to new research.

NASA's Osiris-Rex spacecraft brought rock samples from the near-Earth asteroid Bennu. Now, in the analysis of the rock, scientists have found building blocks essential for life.