Stool samples can help doctors diagnose some health conditions. Tips for collecting a stool sample include urinating before collecting the sample and using any tools that the sample kit provides.

NASA's Perseverance rover has completed an important part of its historic mission on Mars, by collecting a sample of rock from beneath the surface of the Red Planet in a first for humans. The sample, ...

OSIRIS-REx officially started back home Monday after collecting a sample from the asteroid Bennu in October. A NASA spacecraft has started its return trip to Earth after collecting a sample from an ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. NASA's ...

As Americans scramble for at-home tests to find out if they’re infected with COVID-19, some experts are suggesting they should swab their throat, in addition to their nose, to better detect the ...