TS-065424 — Due to environmental concerns and the decreasing supply of fossil fuels, there is substantial demand for nuclear-based energy production. Nuclear energy now provides about 10% of the world's electricity from about 440 power reactors and is the second largest source of low-carbon power. In addition, over 50 smaller countries utilize nuclear energy in about 220 research-size reactors. These reactors are used to produce medical and industrial isotopes and several other purposes.