There is no temperature below absolute zero, and, in fact, zero itself is impossible to reach. The quest to reach it has lured scientists for several centuries revealing interesting and unexpected phenomena along the way. Atoms move more slowly at low temperatures, but matter at bareLy above absolute zero is not immobile or even necessarily frozen. Among the most peculiar of matter's strange behaviors is superconductivity3/4simply described as electric current without resistance3/4discovered in 1911. With the 1986 discovery that, contrary to previous expectations, superconductivity was...