For millions of deaf and hard-of-hearing people, using sign language...

Carbon dioxide has long been a huge source of concern...

No system in the human body functions in isolation. The...

A newly analyzed, deep-field universe photo, produced by stacking multiple...

Seasonal allergies used to follow a fairly stable schedule. People...

For centuries, the Amazon has drawn treasure seekers in search...

Twelve million years ago, vast herds of rhinoceroses grazed the...

Between 2 and 2.9 billion people worldwide cannot afford what...

In 1962, environmentalist Rachel Carson galvanized public concern with her...

Dinosaurs might not have been on the verge of extinction...

When we envision sea turtles cruising through the ocean, we...