Your flight may feel calm, but your heart works overtime. Top cardiologist breaks down what really happens at 35,000 feet.

Minnesotans and others around the country got a rare treat on Nov. 11 with an aurora borealis supercharged by the sun.

Sunday marks the biggest Broncos game in a decade, and arguably the biggest AFC West matchup for Kansas City since Patrick ...

Tahoe’s own Jim Morrison is the feature of an upcoming National Geographic documentary, capturing his Oct. 15 accomplishment ...

A Mission That Went Wrong at the Edge of Space Two hours into a routine surveillance flight in 2006, U2 pilot Kevin Henr ...

The rocket company founded a quarter-century ago by billionaire Jeff Bezos made history Thursday with the pinpoint landing of ...

Cardiac performance in patients with HF can be determined with measurement of the time for peak oxygen uptake to decrease by more than 12.5%.

Northern Lights may dazzle again tonight as a severe geomagnetic storm reaches peak intensity across regions. Follow live.

From remote lakes to rugged mountains, these hidden American spots prove you don't have to leave the country and splurge to ...

The article features a 1974 Cessna 421B Golden Eagle as "Today's Top Pick," highlighting its cabin-class comfort, pressurized ...

The night sky could once again be lit up by the northern lights as a Strong (G3) geomagnetic storm watch is in effect for ...

Two new large solar flares over the last 36 hours have increased the chances of northern lights this week, here's the latest ...