Direct evidence that people produced glass in sub-Saharan Africa centuries before the arrival of Europeans represents a “new chapter in the history of glass technology,” report researchers.

"It's like the brain is saying, 'I'm going to move the eyes, I better tell the eardrums, too.'"

Tides could potentially be a kind of early warning system for certain kinds of volcanic eruptions, letting us know whether a volcano has "entered a critical state."

Infants recognize that speech in a language not their own is used for communication, a new study indicates.