Side-eye. It’s become one of the most powerful tools in a modern human’s optical arsenal. A quick skip of the eyes that can ...

The whites of your eyes are not an accident. They are, scientists now believe, one of the most sophisticated social ...

Chimps’ love for crystals could help explain our ancestors’ fascination with the shiny stones. The forerunners of modern humans collected crystals for which they had no apparent use, say scientists.

Chimpanzee experiments suggest early humans were likely fascinated by crystals because of their unique transparency and ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. It's often said that humans ...

Chimpanzees consistently choose crystals over ordinary rocks, suggesting a curiosity that may echo early humans.