Pebble Bed Advanced High Temperature Reactor Can Enable Lower Costs and Enable Deep Burn and Advanced Fuel Cycle Reactors
The Pebble Bed Advanced High Temperature Reactor (PB-AHTR) is a liquid salt cooled, high temperature reactor design developed at UC Berkeley in collaboration with Oak Ridge National Laboratory and other national labs.
http://nextbigfuture.com/2010/08/pebble ... ature.html
I've read of the pebble bed reactor design years ago. I'm inclined to think that if it has "nuclear" in it's description anywhere, the flighty people will freak out. The biggest impediment to safe nuclear is ignorant people.