Room-temperature, room-pressure superconductivity has been a central goal of materials science for more than a century.
Ranga Dias at the University of Rochester in New York and his colleagues claim to have made a material from hydrogen, nitrogen and lutetium that becomes superconductive at a temperature of just 21°C (69°F) and a pressure of 1 gigapascal. That is nearly 10,000 times the atmospheric pressure on Earth’s surface, but still far lower pressure than any previous superconducting material.
For more, check out this New Scientist story.