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

Research reveals how natural selection shaped the Bajau sea nomads’ spleens to boost oxygen delivery, helping them dive for ...

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

Experts say gait speed, grip strength, balance, and endurance are some of the strongest predictors of long-term independence.

A viral TikTok video features a woman teaching a clever beer brewing hack, impressing South Africans with her traditional ...

VO2max is a measure of cardiovascular fitness, and many watches and fitness trackers can estimate it for you. Here's what you ...

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

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Engine cylinders can misfire due to problems with the ignition system, the fuel system, air and compression, or sensors and ...

Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

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

Far below the reach of sunlight, at roughly 4,000 m deep on the Pacific seafloor, researchers have stumbled on a form of oxygen that should not exist there at all. The finding, quickly dubbed “dark ...