To produce practical amounts of fusion power on earth, heavy forms of hydrogen are joined together at high temperature with an accompanying production of heat energy. (pppl.gov)
Rabinowitz and colleagues fed mice a mixture of equal parts glucose and fructose (the ratio in basic table sugar), in which certain carbon atoms had been swapped out for a slightly heavier form of carbon. (sciencenews.org)
Using the Mainz Microtron, the team of researchers headed by Professor Josef Pochodzalla and Dr. Patrick Achenbach generated a very heavy form of the common element hydrogen with a nucleus comprised of one proton, two neutrons, and a hyperon. (sciencedaily.com)