The sound of cicadas humming gives way to high-pitched squeaking. The sky darkens. Some people settle into folding chairs and turn their heads to the sky as little black blobs shoot out of a storm ...

While exploring caves along a riverbank, a group followed a tunnel that quickly led deep underground. The passage opened into massive chambers filled with crystal formations and towering limestone ...

RATCHABURI, Thailand (Reuters) - Thai villagers scouring a dark cave for bat guano, sought after by farmers as a nutrient-rich crop fertiliser, are undaunted by scientists' suggestion that it could be ...

Add Yahoo as a preferred source to see more of our stories on Google. The sound of cicadas humming gives way to high-pitched squeaking. The sky darkens. Some people settle into folding chairs and turn ...