Fossil fuels have caused some major human health
and human welfare problems, due to their extensive use
in various industrial non-industrial sectors. Such problems are detailed elsewhere (Barreto et al., 2003; Bockris, 2003; Dincer, 2000). In reality, the main source of these problems is seen as the extensive use of fossilbased technologies and strategies only by human beings to govern the societies, countries, in short, the whole world, throughout centuries. We have reached a level that is not tolerable anymore. The urgent need in this regard is to develop green energy strategies for sustainable future without any negative environmental and societal impacts. Here, we should define green energy! It can be defined as the energy source, which has zero or minimum environmental impact, as more environmentally benign and more sustainable, and produced from solar, hydro, biomass, wind, geothermal, etc. This type
of green energy reduces the negative effects of fossil