In the central Sahara, where sand now buries ancient lakes, scientists have pulled genetic material from 7,000-year-old ...

This video examines whether alien plants could actually be blue and what physics says about plant color beyond Earth. It explains how star type, light spectrum, and energy efficiency shape what colors ...

An Arizona sheriff’s department got more than 4,000 calls within 24 hours after the release of videos of a masked person on ...

For those who don't know, Sildenafil (Viagra) causes one's blood vessels to open more readily, causing more plentiful erections, but also flushing, sinus stuffiness, higher heart rate, and a multitude ...

Here's what we know about the South Florida DNA lab chosen over Quantico to analyze evidence in the Nancy Guthrie abduction.

Pima County Sheriff Chris Nanos said the results that investigators have received from DNA testing in the Nancy Guthrie case ...

DNA evidence belonging to somebody not “in close contact” with Nancy Guthrie has been recovered from her Arizona home – a ...