Morgan O’Hanlon: As you’re driving through West Texas and through Balmorhea, this kind of big open desert, you get to the ...

Researchers exploring Phantom Springs Cave near Balmorhea have documented new species in one of North America’s deepest underwater cave systems. The fragile ecosystem, accessible only to specialized ...

Underwater caves off the coast of Sicily offer new clues about the island’s first human inhabitants. They may have arrived by sea, not by land, as previously assumed. Sicily is one of the earliest ...

Hidden beneath the water’s surface, these caves offer a unique beauty that few have the chance to witness. Imagine swimming in crystal-clear waters, surrounded by dramatic rock formations, and ...

Located east of Malaga, Treasure Cave long attracted divers and visitors without revealing its deeper historical importance. That changed when researchers identified human footprints preserved in ...

A mile and a half beneath the ocean’s surface, the seafloor seems nearly as alien as the surfaces of other planets. Deep-sea volcanic ridges, formed by the collisions of tectonic plates, create ...

The world’s longest underwater cave system now stretches an astonishing 524 Kilometers, a hidden labyrinth that, in raw length, outstrips the Grand Canyon. Threaded beneath Mexico’s Yucatán Peninsula, ...

Washington University in St. Louis archaeologists are investigating coastal and underwater caves in southeastern Sicily, tracing early human dispersal onto the island. (Photo by Ilaria Patania via ...

For most people, scuba diving in Mexico is an exciting vacation adventure. For Fernando Calderon Gutierrez, it’s just another day at the (underwater) office. A postdoctoral research assistant at Texas ...

Archaeological surveys led by scientists at Washington University in St. Louis suggest that coastal and underwater cave sites in southern Sicily contain important new clues about the path and fate of ...

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. A mile and a half beneath the ocean’s surface, the seafloor ...