Pebble bed
About a year ago, more or less, I stumbled across the "pebble-bed modular reactor" concept (PBMR, for short) after half-hearing a report about it on NPR. A Google search on the terms "pebble bed" + nucliear + reactor just yielded about 2,500 hits; here's the top of the list:
Technology Review
The 'pebbles' theoretically have the China Syndrome licked. Spent fuel waste will still be a problem, of course...
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