Deep beneath a Mexican mine lies the Cave of Crystals, a breathtaking cavern filled with colossal selenite formations.

For 150 million people across the United States, humidity surged to levels higher than Miami late Monday. Maps show where.

The ALMA radio telescope array in the Atacama Desert temporarily halted operations after a rare snowfall blanketed the base ...

Deep in the sweltering jungles of central Laos, Long Tieng played a central role in the United States’ fight to stop the spread of communism in Southeast Asia. Fifty years after its fall, we ...

In the early 1990s, eight people tried to survive in a hermetically sealed glass structure filled with miniature forests, ...

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Get ready to be amazed by the jaw-dropping beauty of our Wonderful Planet! This video takes you on an unforgettable journey to some of the most breathtaking places on Earth, locations that every ...

As temperatures rise across the U.S., here’s what you need to know about high humidity and how it can affect you.

Hot air holds more moisture than cold air. That simple truth, while familiar to anyone who’s used a blow dryer or walked ...

The anechoic chamber at Orfield Laboratories in Minneapolis is listed as the "quietest place on Earth" by Guinness World Records. Fiberglass wedges, 3 feet deep, surround the space, and the ...

Our severely stormy pattern will not take a break for the holiday weekend. Storms will continue to threaten southeast ...

An intense and nearly historic weather pattern is cooking much of America under a dangerous heat dome this week with ...