Helium, the second-lightest element in the universe, has a variety of uses, from keeping balloons afloat to cooling superconducting magnets. It is also a noble gas — so labeled because it was long ...

Disulfide bonds between pairs of cysteines contribute substantially to the folding and stability of many proteins. In bacteria, this advantageous modification is generally limited to proteins that are ...

Deep within giant planets, helium may form stable compounds with other elements, a new study finds — something that was long thought never to happen in nature. Helium is second only to hydrogen as the ...