Horses can detect fear in humans by smell, becoming more likely to startle and more wary of people who are scared, a new study has found.

A new study is the first to describe tool use in a cow. It could be evidence that livestock has higher cognitive capabilities than once thought, researchers say.

Images of plants painted on pottery made up to 8,000 years ago may be the earliest example of humans’ mathematical thought, a study has found.

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study.

Flu is making people miserable from coast to coast, thanks in large part to a new strain called subclade K.