Why do some animals solve problems while others don't? The new study from the Max Planck Institute for Evolutionary Biology, ...

Optical illusion personality ... traits. This particular personality test was shared by the Bright Side on YouTube initially.

(CNN) — It’s tiny, but this lab mouse could have a mammoth impact. With curly whiskers and wavy, light hair that grows three times longer than that of an ordinary lab mouse, the genetically ...