FBI and sheriff's personnel continue to search for Nancy Guthrie in the Tucson area. No suspects have been named as search ...

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

One might not imagine such a time being conducive to the existence of fragile lifeforms, yet it is likely to be the era in which Mars was most habitable ...

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

Emily Pike slipped out a window of her Arizona group home a year ago; days later, the 14-year-old’s remains were found in a ...

Pima County Sheriff Chris Nanos fired back on claims that he withheld essential physical evidence from the FBI in the disappearance of Nancy Guthrie.

Dust from asteroid Bennu is revealing a surprising origin story for life’s building blocks. New research suggests some amino acids formed in frozen ice exposed to radiation, not warm liquid water as ...

Two men that frequent Arkansas' Crater of Diamonds State Park came across a "historic" 6.03-carat yellow diamond while ...

Samples returned from asteroid Bennu contain amino acids that may have formed in icy, radiation-filled environments rather than warm, watery settings. The discovery, published in the Proceedings of ...

Organic compounds found in Mars rocks are too abundant to rule out the possibility of Martian life in the red planet’s history, NASA scientists say.

Penn State researchers think a key ingredient for life may have formed in deep freeze, not in a warm asteroid puddle. A space sample with a new twistScientists at Penn State; led by geoscientist ...