As you can see there are number of different alternative energy sources that are more than capable to replace currently dominant fossil fuels, of course given enough MONEYfor their further development. The main advantage of these alternative energy sources is that they are ecologically acceptable energy sources, that unlike fossil fuels do not release large quantities of CO2 and other harmful greenhouse gases into the atmosphere, causing global warming and climate change. This is really the advantage that should mean faster development of different alternative energy technologies because world will otherwise lose the battle against climate change. Even politics has become aware of this fact, and world looks ready to embrace new rules that should reduce current emission levels. In order to succeed in this world will need to stop relying on fossil fuels to satisfy its energy demand, and will have to focus on alternative energy sources, especially renewable energy sources, and make them more effective.