With high carbon dioxide, low oxygen and no photosynthesis, here’s how an entire ecosystem persists in Movile Cave, one of the most extreme environments on Earth.

Deep in the rugged mountains of Papua, Indonesia, one of the most astonishing mining operations on Earth continues to shape ...

Formed over 20,000 years ago from the eruption of the Corona Volcano in northern Lanzarote, this impressive tube stretches ...

This massive underwater volcanic tunnel features lava caves, lakes, a concert hall, and a fascinating blend of subterranean ...

A rock formation in Minnesota has exposed some of the oldest rocks on the surface of the planet, and visiting it is a ...

Would Trump risk reducing the U.S. influence in the World Bank by decreasing its shareholding? Plus, a glimpse at the dark ...

In ESPN's Way-To-Early Top 25, the Miami Hurricanes were ranked No. 23. Following up the initial rankings, ESPN also picked one defining game from the schedule of each Top 25 team. The Hurricanes ...

Digging deep into Earth's layers reveals some of the most stunning and rare sights, like the glowing lavender caves. These underground wonders, illuminated by natural minerals, promise a unique ...

I’m assuming it went through a legal department or other kind of review. They said, ‘You can have something inside the paper but you can’t do the wrap.’ We said thanks, no thanks because ...

SISTER BAY - Gary Soule knows Door County's caves. He should – he's been in every one of them, at least the ones we know of so far, including the cave he discovered almost 57 years ago.

It has generally been assumed that this will be a single dam, the largest in the world, which could produce three times more energy than the 22,500 MegaWatt Three Gorges Dam. A study of the Chinese ...