Deep inside a Swiss mountain, a group of students spent some of the summer simulating what life might be like inside a lunar ...

A new documentary from National Geographic Pristine Seas and Oceans North spotlights how Inuit and Cree communities are ...

At Utah's White Mesa Mill, the air hums with acid and ambition. Massive sacks of monazite ore-each heavier than a car-sit in ...

While shows like The Sopranos are works of fiction, the mafia is, in fact, real. A new three-part Netflix documentary shines ...

Hidden inside Vietnam’s Phong Nha-Ke Bang National Park is Son Doong, the largest cave on Earth. It’s so vast that a Boeing ...

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical ...

What really happens beneath the surface of the planet — in one of the most secure facilities on Earth — is far from what you ...

The hollow Earth theory suggests vast subterranean worlds with their own sun, atmosphere, and possibly superhuman ...

Moroccan rocks reveal that Earth’s magnetic field once changed fast but followed a hidden order, helping scientists map ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a ...

In the 1960s, the United States, the United Kingdom, and the Soviet Union signed a treaty banning nuclear weapons tests ...

For adventurers who’ve checked off Earth’s extremes, a new frontier offers an opportunity to be part of history.