What is the Cleanest Alternative Fuel That Has Been Discovered ?

I know each alternative fuel comes with a price (as does everything). The extracting of hydrogen is supposedly not environmentally friendly, this being one of the prices of its implementation. I am not an expert on the subject though. Does anyone know what the cleanest alternative fuel available or that has been found is ? [...]

Alternative Green Energy

Alternative Green Energy Facts

Alternative green energy refers to any form of electricity generation that is sustainable and has a limited negative impact on the environment. There are a range of methods. Some of these have been well received like wind, solar and hydro power. Others are more controversial and include using geothermal power and biofuels.
Wind [...]

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