TUCSON, Ariz. — A Q-tip, a tissue and a pizza crust. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. To investigators, this seemingly innocuous ...

Only a few years ago, Tuesday’s announcement that a glove believed to be connected to the disappearance of Nancy Guthrie in Tucson, Arizona, had no match in a DNA database would have been a dead end.

Researchers have analyzed a sample of DNA believed to belong to Adolf Hitler, which they say reveals the dictator of Nazi Germany had a genetic marker for a rare disorder that can delay puberty, ...

The DNA of nearly all life on Earth contains many redundancies, and scientists have long wondered whether these redundancies served a purpose or if they were just leftovers from evolutionary processes ...