Hydrogen is one the clean energy forms or maybe the most clean energy form of all as it produces only water,electricity and heat when consumed in a fuel cell.With more frequent extreme climate events that caused damage and cost lives around world in the past few years,the call for replacing fossil energy including coal,oil and even natural gas(that are hold liable for these losses)with more sustainable and cleaner energy forms is loud.Hydrogen has been regarded as one of the viable and important solutions to fight against climate changes.