The discovery of more than 100 prehistoric structures in the Cova Dones cave in Spain makes it one of the most significant prehistoric underground sites in the world. Archaeologists found stalagmites ...

The ocean is full of mysteries that lead to legendary lore.During a recent moonlit harbor excursion, conversation quickly turned to tales of piracy and exploration.A guide shared stories from the days ...

On Sunday’s episode of The Excerpt podcast: Hidden beneath Earth’s surface are caverns and pathways that hold the secrets of our planet’s very beginnings. Even after decades of exploration, there are ...

For millennia, caves have served as shelters for prehistoric humans. Caves have also intrigued scholars from early Chinese naturalists to Charles Darwin. A cave ecologist has been in and out of these ...

Nature Cat is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio ...

Mars skylights like this could be the mouths of caves formed by lava tubes. NASA wants to explore them. Credit: NASA / JPL-Caltech / Univ. of Arizona Ever since scientists have had an orbiter's view ...