GE develops high-tech fridge magnets that could save the world billions of dollars in energy costs

For a long time, researchers could only make it work with superconducting magnets that had to be cooled to very low temperatures — which made it useful as part of a larger, cryogenic cooling system, but useless for room-temperature situations. In recent years, the development of better magnetocaloric materials and strong room-temperature magnets has allowed the technology to inch slowly forward Continue reading