Thorium: A safer alternative for nuclear power generation?

Kan det finnas fler skäl till att thorium inte används än de som anges i artikeln?

The world's growing need for energy, the limits of our supply of fossil fuels and concern about the effects of carbon emissions on the environment have all prompted interest in the increased use of nuclear power. Yet the very word "nuclear" carries with it an association of fear. People are concerned about the waste produced by reactors, the possibility of catastrophic accidents as highlighted by recent events in Japan and the link between nuclear power and nuclear weapons. Yet what if there existed a means of nuclear power generation with which these risks were drastically reduced?
The answer could be thorium - an element occurring as a silvery metal that's more abundant, cleaner and can produce more bang-per-buck in energy terms than uranium. So how does thorium differ from uranium and plutonium, and why isn't it being used? First, a quick run-down on how nuclear energy works.

http://www.gizmag.com/thorium-nuclear-power/18204/