A rock on Mars that may hold clues about ancient microbial life on the Red Planet continues to puzzle scientists.

Your first glimpse of Crater Lake is absolutely breathtaking! Its deep blue waters are unmatched anywhere else. How did ...

The Red Planet and its tiny moon Deimos were recorded at a very near distance as the asteroid-chasing spacecraft completed a flyby on Wednesday.

A volcano in Alaska is showing new signs of unrest. Experts say the likelihood of an eruption in the next few weeks or months has increased.

Don't worry about what vouchers will do to high school football, Abbott says. Just look at Arizona. We did, and it's a state ...

I’m standing on my Ski-Doo snowmobile somewhere in the Venn diagram that entwines Idaho, Montana and Wyoming. As the engine ...

Astronomer Percival Lowell founded his Arizona stargazing lab in 1894 to aid in his search for life on Mars. While that quest is still ...

One of the most unique attractions at Soldier Hollow happens year-round – the Soldier Hollow Classic Sheepdog Championship.

NBA: The Knicks got all they wanted in Portland last night. The Trail Blazers took them to the wire but the home team went down 114 - 113 in Overtime. The game featured 42 lead ...

Welcome to Nat Geo Your Shot: National Geographic’s global community for aspiring visual storytellers. Find the community on Instagram @NatGeoYourShot and follow along for hashtag challenges ...

Evidence in local rock indicates the collision happened around 3.47 billion years ago, easily exceeding the age of any other documented crater. Older research pointed to a 2.2-billion-year example ...

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