Therefore, it is surprising that little attention was given to a recent announcement. The China National Nuclear Corporation (CNNP) along with TerraPower — a Seattle-based start-up financed in large part by Microsoft founder Bill Gates and his longtime associate, Nathan Myhrvold — announced a plan to build a traveling wave prototype. This reactor can use a variety of materials for fuel, however, an exciting option is the use of depleted uranium. This is the by-product of the uranium enrichment process with significant volumes stored in secured locations. We have sufficient quantities of depleted uranium to generate electricity for centuries. Also, this reactor can use "spent" fuel from our existing reactors.