A new study links likelihood of the brain disease to a combination of chemicals and genetics
Harvard researchers find a new compound that can make old cells young again
The Yeti could be a real animal
The reality television star was diagnosed with endometrial cancer
Ethicists are concerned couples will start picking donors based on certain traits.
All that lives must die—but some organisms get a little more time on this Earth than others. For nearly a decade, the photographer Rachel Sussman has been...