Changes in the environment likely made life too difficult for Peru's Moche.
Exceptional fossils provide vision of how 390-million-year-old animals stayed out of sight.
First artificial ink is still blue, but now known to emit near-infrared rays when irradiated with light.
Genomes and language provide clues on the origin of Homer's classic.
Mouse study shows relationship between exercise and size of the brain.
Finding may overturn previous notions about human ancestors' diets.
The climate is a big topic in San Francisco this week at the American Geophysical Union’s fall meeting
War, available resources, determined the invention of instruments.
Multi-use tools may shed light on common ancestor.
Harry Potter is fictional, but Achilles and Beowulf -- perhaps not.