Geneticists have uncovered a faint but persistent signal in modern DNA that points to a vanished branch of humanity, a “ghost ...

Deep inside a handful of caves, scientists are pulling genetic secrets out of bones, teeth and even the surrounding dirt, and ...

More than seven years after DNA testing freed two men from prison, clearing them in the 1994 slaying of Antwinica Bridgeman, prosecutors have not filed new charges in the case despite a genetic match ...

A California murder went unsolved for nearly 30 years, until one DNA match cracked the decades-old case. You can also get more behind-the-scenes of each week's episode by listening to "20/20: The ...