Try this 10-minute walking test to see how many steps you can take and what your result says about cardio fitness.

A tiny desert fish survives in a sun-scorched cavern on the edge of extinction. Here’s how it’s offering scientists a rare ...

Stardust alone can’t drive stellar winds, reshaping what we know about how aging stars spread life’s elements through space.

In the gut bacteria of a Japanese tree frog, researchers have found new hope for treating cancer, in which one bacterial ...

With their thrilling sci-fi aesthetics, spaceplanes are an attractive alternative to rockets. They are attractive in ...