As you navigate the subterranean waterways, the sight of various sparkling crystals protruding from the cave walls and ceilings is truly mesmerizing. Guides also provide fascinating explanations ...

Westend61 / Getty Images A Chinese Wall is an ethical concept of separation between groups, departments, or individuals within the same organization—a virtual barrier that prohibits ...

(photo credit: Prof. Jean Clottes.) The extinction of large animals in the Levant may explain why prehistoric humans did not paint on cave walls in Israel, new research from Tel Aviv University ...

Why it's awesome: Deep inside one of Gabon's cave systems lives an unusual population of orange dwarf crocodiles. They live in complete darkness, feast on bats and swim in liquid guano (aka bat poop.