Soar above Peña de Bernal, one of the tallest monoliths in the world, rising dramatically over the town of Bernal in ...

Far below the waves of the Pacific Ocean, cameras on a research vessel recently swept across something that looked impossible ...

In the predawn darkness, a team of scientists climbs the slope of Mexico’s Popocatépetl volcano, one of the world’s most ...

On a geological tour of this ancient part of the Kingdom of Saudi Arabia, Nicola Chilton learns about the wondrous landscape ...

A massive volcano hidden beneath the Pacific is swelling again, but its predicted eruption never came. Scientists are now ...

Yellowstone may be America’s most famous national park, but many park rangers quietly agree that fame does not always equal ...

Think you’re brave? These 10 claustrophobic hikes in the U.S. feature tight squeezes, narrow canyons, and adrenaline-filled ...

If the theory is proven correct, the consequences could be enormous, spelling a much more risky, explosive future.

In ʻŌlelo Hawaiʻi, or the Hawaiian language, we might call them puahiohio, or whirlwinds. In meteorological terms, these ...