Holy Grail: Hydrogen turned to metal.

In Brain Technology, Materials Science by Brainy Days Ahead

Research teams have been racing to develop metallic hydrogen, which is highly prized because of its potential as a superconductor. Superconductors used in magnetic resonance imaging (MRI) machines must be kept at extremely low temperatures. Costly liquid helium currently is used for this purpose. Now researchers at Harvard University, applying a pressure greater than that at the center of the earth, have turned hydrogen to metal, creating the first-ever sample of metallic hydrogen on Earth.