Even if your favorite gadget isn't flaunting them, rare earth metals are vital to all sorts of high-tech gizmos, from your flat-panel TV and computer hard drive to the hefty batteries that power the Toyota Prius. But over 95% of the world's rare earth comes from China; and late last year, China told the world that they'd like to keep the lion's share all to themselves. What will we Westerners do? Well, we could let China continue producing mountains of e-waste on our behalf. But we cou