Nancy Guthrie was taken from her home in Tucson, Arizona, more than two weeks ago and remains missing. Authorities have yet to publicly name any suspects or persons of interest as they investigate recovered DNA.

The sheriff's department said that the DNA process takes time and additional DNA evidence found at the residence is being analyzed.

Tyler Kartzinel likens protecting biodiversity to enhancing cellphone networks. His analogy is pretty straightforward: look for gaps in coverage, and then do what’s needed to fill them. “Engineers have figured out how to look for dead zones and enhance ...

Artificial intelligence has gotten a bad reputation lately, and often for good reason. But a team of scientists at Google’s DeepMind now claims to have found a revolutionary use case for AI: helping humanity unravel the “dark matter” of our genome ...