From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to come thick and fast. But when we've found it, how will we know for sure?

The protein question follows every vegan athlete, but the science tells a different story than the skeptics expect.

To ensure that protein production in our cells runs smoothly, the protein complex NAC slows down the rate of protein ...

Proteins are among the most important molecular building blocks of life. They are chains of amino acids assembled in our cells by ribosomes, the molecular "protein factories" of our bodies. The ...

High-protein snacks can help regulate appetite and support your protein goals. Learn about easy, high-protein snacks that aren't a bar or a shake.