Nuclear power is itself inefficient: For every three units of energy produced by the reactor core of a U.S. nuclear power plants, two units are discharged to the environment as waste heat. Nuclear plants are built on the shores of lakes, rivers, and oceans because these bodies provide the large quantities of cooling water needed to handle the waste heat discharge1.  It is perfectly true that alternative energy is not efficient enough to serve the energy needs of the world's population today. However, with investment all these methods could be made efficient enough. Not enough has been done to make use of all the natural energy sources that do not create the kind of damage nuclear power generation causes. We need to develop more efficient ways to capture wind, water and solar power, to explore other options and to reduce the level of power required. This is not an argument for nuclear power but one for greater resources to be put to develop natural energy sources and help protect the planet for future generations.  1Got Water? Nuclear Power Plant Cooling Water Needs." Union of Concerned Scientists