Air travel has certainly evolved over the years. Frequent flyers may have noticed that everything from windowless seats to ...

Kilian Jornet wanted to summit 72 of the tallest peaks in the contiguous United States. He gave himself a month to do it.

Founded in the 4th century, Sümela is a gravity-defying marvel, hanging nearly 1,000 feet over a wooded valley in Turkey, that today attracts thousands of religious pilgrims.

Even the most experienced mountaineers are stunned that Kilian Jornet could climb so many 14,000-foot peaks in such a short ...

Prayer flags frame a rescue helicopter as it ferries the injured from Everest Base Camp on April 26, 2015, a day after an avalanche triggered by an earthquake devastated the camp.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On Oct. 19, 2016, the European Space Agency's ExoMars mission arrived at Mars! ExoMars 2016 ...

Scientists discover all stalagmites growing from cave floors follow a mathematical rule that explains how these mineral ...