Electrical stink

A substance familiar to many as the odor of rotten eggs, hydrogen sulfide, has been demonstrated as losing its electrical resistance at -80 Celsius under a pressure of 1.5 million bar, by researchers in Germany. Scientists at the Max Planck Institute for Chemistry and the Johannes Gutenberg University Mainz have observed a new record high for superconductivity in the substance and report details in the journal Nature. The team suggests that other hydrogen-rich substances might also become superconductors, even hydrogen itself, although that requires 4 megabar of pressure, the team reports.