As infants, humans naturally learn new words and their associations—like the fact that forks are related to bowls because ...

Gifted dogs can categorize toys by function, not just appearance. In playful at-home tests, they linked labels like “fetch” ...

More than a billion years ago a hungry cell devoured a tiny blue-green alga. But instead of the former simply digesting the latter, the duo struck a remarkable evolutionary deal. Now scientists are ...