Scientists gave marmosets a gene that made their feet glow green, and one of the animals passed it along to its offspring — the first time that an added gene has been inherited by a monkey. It was a milestone, experts said, that should make it easier to ...

Despite its rotten-egg smell and high toxicity, hydrogen sulfide in small doses helps protect mice from heart failure, according to research published Tuesday on an experimental treatment that one day could benefit humans. Potentially life-threatening for miners and sewer workers, hydrogen sulfide has been recently found in the human body and mammals in general, where it is produced in minute ...