but coal does not contain thorium (or we all would be radioactive) Coal is organic.
Thanks for that, but that was more a joke than something else ... But Coal DOES contain Thorium (if not made out of wood). Why ? Because it's been "stored" in rock, and so it "gain" impurities like Thorium, wich makes IRL Coal-based power plants worst idea ever because it increase more the natural radioactivity than a Nuclear Power Plant does. (Ask Greg about Angela's policy to win the election ... ^^).
Moreoever, can't you see that more than trying to find some scientific explanation, I'm trying to make suggestion that would makes Nuclear Reactor even more awesome ?
Next time, please think before posting ;).
Edit: while I'm here, I think burning sodium is strange (it's not used as a Fuel IRL, even if it can provide energy by ... meeting water ^^). It's more like a Liquid that could heat by cooling down reactor or be heated before (for energy storage) and then providing energy with Thermal Generator. (Or could be heated by things like that: Picture here! .
Edit 2: For the guy flaming me: according to nuclear physics law and to probabilities, we ARE ALL RADIOACTIVE, believe it or not.