Boulder, CO, USA – A GSA Pardee Keynote Symposium on Wednesday concentrates on world politics, the rare Earth locations that hold elements important to modern civilization, and the need to find more in the U.S. These so-called "rare earth elements" (REEs) get their name not because they in themselves are uncommon, but locating them, differentiating them from each other, and separating them from their host ores is, to put it simply, complicated.