On Thursday, a Senate Energy and Natural Resources subcommittee will hold a hearing on rare earth minerals that are used to make clean energy products like electric vehicles, wind turbines and energy efficient lighting. Recent developments in China, where 97 percent of the world's rare earth metals are produced, have triggered comments by lawmakers and placed additional importance on the scheduled hearing. The New York Times reported last week that Chinese officials were blocking shipments of rare earth metals from China to Japan. The hearing will start at 10 AM. Location: Senate Dirksen Office Building.