A Skoltech scientist has raised the world's only isotope-labeled guinea pig. For 156 days, the animal, named Khryun, was given only heavy water to drink. Such water is non-radioactive and has long ...
Every molecule of pure “heavy water” contains two atoms of deuterium, which is hydrogen of the double-weight form identified in 1931 by Columbia’s Harold Clayton Urey. Deuterium is not rare in nature.