We've long assumed our species evolved from a tidy, single stream of ancestors. But life on Earth is never quite so ...

We can, for example, make sure that a kid with a high genetic risk for addiction stays away from opioids for pain management.

Studies have suggested that genes under strong sexual selection tend to evolve rapidly, particularly those associated with ...

Chimpanzees are humans' closest living relatives, sharing more than 98% of our DNA. They are endangered, with fewer than ...

Lurking within the genomes of nearly all species--including plants, fungi, and even humans--are genes that are passed from generation to generation with no clear benefit to the organism. Called ...

Of the 8.7 million species on Earth, why are human beings the only one that paints self-portraits, walks on the moon and ...

Animal experiments eliminate some potential drugs as either ineffective or too dangerous to use on human beings. If a drug passes the animal test it's then tested on a small human group before ...

A study led by bioengineers at the University of California San Diego sheds new light on how a type of heart valve disease, called aortic valve stenosis, progresses differently in males and females.