High-Temperature Superconductors

Anonymous Coward writes "Seems all those scientists who've spent years tweaking exotic materials at freakily low temperatures to turn them into superconductors should've just looked on the lab shelf. Magnesium diboride superconducts at much higher temperatures than other metallics and could even bust the theoretical max T, says this story at New Scientist. There's more research on the same here but 40K's still pretty cold - when's my laptop gonna run for free?"