Nancy Guthrie was taken from her home in Tucson, Arizona, more than two weeks ago and remains missing. Authorities have yet ...

Authorities said the investigation into the disappearance of 84-year-old Nancy Guthrie, mother of "Today" show co-host Savannah Guthrie, is entering a new phase as DNA evidence yields no matches and ...

Explore how genetic genealogy is being used to solve cold cases, including the disappearance of Nancy Guthrie, and the challenges it faces.

Researchers at the University of Huddersfield have used ancient DNA to reveal that hunter-gatherers in one part of Europe survived for thousands of years longer than anywhere else on the continent—and ...

The search for 84-year-old Nancy Guthrie enters a critical new phase as the reward for her safe return reaches $300,000. Following a major contribution from a Milwaukee-based donor, investigators in ...

Daphne O. Martschenko and Sam Trejo both want to make the world a better, fairer, more equitable place. But they disagree on ...

Investigators looking into the kidnapping of Nancy Guthrie believe the case would soon have to move into a new phase with ...

According to the team's calculations, the simple fact of having a more marked filiation with these prehistoric ancestors (one ...

For neither history nor biology has ever supported the comfort of simple stories.

Ancient DNA has revealed that hunter-gatherers in Belgium, the Netherlands and nearby parts of Germany adapted to ...

Sources told ABC News that investigators in the Nancy Guthrie case may soon scale back dedicated resources as some leads come up empty. The Pima County Sheriff's Department says the investigation ...

A new study has used ancient DNA to reveal that hunter-gatherers in Belgium, the Netherlands and nearby parts of Germany adapted to farming thousands ...