A good portion of human DNA is what scientists refer to as "junk" -- stuff left over from ancient viruses and such. But maybe ...

Jonathan, an Aldabra giant tortoise, is about 194 years old and the oldest land animal alive today. Discoveries about his ...

A record player-like microscope and computer simulations solve a longtime mystery, showing that metal ions bridge DNA strands that would normally repel.

One of the unresolved mysteries about the history of the Americas is when the first people arrived. Despite extensive debate ...

For decades, scientists have been able to look at individual moments in the development of an embryo: a snapshot of a ...

Binge eating and anorexia are genetically linked to opposite ends of the body weight spectrum, but a study of more than 1.2 ...

Tonight, Ashlee Mullany investigates the hidden risks of at-home DNA testing, from shocking family discoveries to concerns ...

A new study shows that sequencing tumor DNA in ascites, pleural fluid, cerebrospinal fluid, and pericardial effusions can ...