The deepest caves on Earth are still being studied by scientists. They are unique environments created over millions of years ...

Vietnam's Son Doong, the world's largest cave passage, started its life millions of years ago as a crack the width of a piece of hair. Today, adventurers marvel at the surreal caverns in its depths.

The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have mapped 524 kilometers (325.6 miles) of a subterranean water 'web' near ...

Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

Ebola is one of the world’s deadliest viruses, and Marburg is its cousin. This hemorrhagic virus shares many symptoms with ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and ...

A monumental discovery was made on September 12, 1940, when four local teenagers explored a small opening and squeezed ...

The Tentative Lists of States Parties are published by the World Heritage Centre at its website and/or in working documents in order to ensure transparency, access to information and to facilitate ...