Very cool ten-minute talk about thorium’s prospects as a large-scale source of energy.
Sorenson blogs at Energy from Thorium. 
And here is a primer on thorium from the World Nuclear Institute.
Currently, its seems that China and India lead the world in exploring thorium as an option.
Great, but why no discussion of why nuclear power companies have prefered uranium and water cooling?
Improvements are welcome, but current technologies are already adequate to change the world along the lines he describes — if not for politics.