The rare earths do come from China and that's where most of the environmental damage they cause happens. Rare earths can be mined almost anywhere. They aren't rare but they also aren't concentrated because they aren't water soluble. They are mined in places that don't care about environmental damage, not in places where specific geologic conditions exist (like everything else except AL). Also, you need them to make generators. When you put those generators in wind instead of in hydro or nuclear, you waste them. This is because they will generate 6 to 9 times as much power in hydro or nuclear plants as in a wind turbine.