Rare earth elements (REEs) continue to be a hot topic. This group of 17 chemically similar elements crucial to the manufacture of many hi-tech products is causing international supply headaches. China currently produces about 90 percent of the world’s rare earths and produces more than 70 percent of the world’s rare earth magnets - neodymium in particular is used to make smaller, more efficient and more powerful magnets used in loudspeakers and computer hard drives.