https://techcrunch.com/2023/08/09/boo-no-room-temp-superconductor/

The internet — and more than a few scientists — got their hopes up a couple weeks ago when a team of physicists from South Korea announced that they had created a room-temperature superconductor from a slew of common yet unlikely materials.

LK-99, as they called the material, could be made from things like lead, phosphorus and copper, and the procedure didn’t even require particularly exotic equipment.