Advances in Magnets Move Distant Nuclear Fusion Dream Closer
Teams working on two continents have marked similar milestones in their respective efforts to tap an energy source key to the fight against climate change: They've each produced very impressive magnets. On Thursday, scientists at the International Thermonuclear Experimental Reactor (ITER) in southern France took delivery of the first part of a massive magnet so strong its American manufacturer claims it can lift an aircraft carrier.Almost 20 meters (about 60 feet) tall and more than 4 meters (14 feet) in diameter when fully assembled, the magnet is a crucial component in the attempt by 35 nations to master nuclear fusion.Massachusetts Institute of Technology scientists and a private company announced separately this week that they, too, have hit a milestone with the successful test of the world's strongest high-temperature superconducting magnet…