The bonus of Thorium is that the wastage cannot be used for weapons if proper measures are put into waste. Also with the molten lead, the background
radioactivity is absorbed so to speak.
I've been looking at this for quite some time and it seems to be the best option.
The efficiency of Thorium is incredible, able to run London for a week on a fistful of the stuff and yet we are throwing the material away from rare
earth element mining. Also the states could be powered for 5 years on a football field of the stuff.
There are also designs that allow the process to occur through a laser to sustain the reaction, thus meaning in the event of an earthquake, tsunami or
other natural disaster, if the power is blown, the reaction stops. The energy required for the laser is powered by the first reactor, with the extra
electricity from the reaction being used to power another laser in the another reactor.
The radioactive wastage provided by the reactor is radioactive for a few hundred years, not thousands like some of the current wastage.
In all honesty, the only reason we aren't using this fuel is due to the public perception that Nuclear Power is bad.
However if you compare Coal power to Nuclear, there are some extremely interesting facts.
Each year the world governments subsidizes the Fossil fuel industry, 200 billion US dollars to keep in operation.
Coal kills 12,000 people a year whilst producing more radioactivity than a current Nuclear Power plant does.
But you're right, Nuclear power is not the way is it...
It's not 100% clean but it's a lot cleaner than the current sources we're using today.