There are no nuclear reactors powered by organic material, either, although combustion engines that use ethanol made from corn or other organic material are becoming more common. (scientificamerican.com)
More exotic designs remain on the horizon, such as reactors powered by thorium fuel, but the AP1000 and other more conventional designs are important for one simple reason: they are being built. (newscientist.com)
NASA and the Department of Energy's National Nuclear Security Administration (NNSA) have successfully demonstrated a new nuclear reactor power system that could enable long - duration crewed missions to the Moon, Mars and destinations beyond. (valuewalk.com)