“ Thorium-Fueled Automobile Engine Needs Refueling Once a Century ,” reads the headline of an October 2013 story in an online trade publication. This fantastic promise is just one part of a modern boomlet in enthusiasm about the energy potential of thorium, a radioactive element that is far more abundant than uranium. Thorium promoters consistently extol its supposed advantages over uranium. News outlets periodically foresee the possibility of ” a cheaper, more efficient, and safer form of nuclear power that produces less nuclear waste than today’s uranium-based technology.” Actually, though, the United States has tried to develop thorium as an energy source for some 50 years and is still struggling to deal with the legacy of those attempts. In addition to the billions of dollars it spent, mostly fruitlessly, to develop thorium fuels, the US government will have to spend billions more, at numerous federal nuclear sites, to deal […]