hydrogen sulfide
Oxygen-free early oceans likely delayed rise of life on planet
RIVERSIDE, Calif. — Geologists at the University of California, Riverside have found chemical evidence in 2.6-billion-year-old rocks that indicates that Earth’s ancient oceans were oxygen-free and, surprisingly, contained abundant hydrogen s…
Structure of a protein related to heart and nervous system health revealed
ANN ARBOR, Mich. — University of Michigan researchers have solved the structure of a protein that is integral to processes responsible for maintaining a healthy heart and nervous system.
The protein structure in question is cystathionine b…
‘Rotten eggs’ gas and inflammation in arthritic joints
Hydrogen sulfide (H2S) is a gas more commonly associated with the smell of ‘rotten eggs’ and blocked drains. However, it has now been shown to be present naturally in our bodies and reside in knee joint synovial fluid, the protective fluid found in …
Geologists revisit the Great Oxygenation Event
In “The Sign of the Four” Sherlock Holmes tells Watson he has written a monograph on 140 forms of cigar-, cigarette-, and pipe-tobacco, “with colored plates illustrating the difference in the ash.” He finds the ash invaluable for the identificat…