The Fossil Based Fuels (FBF) have been and would remain for many years as a sustainable energy resource. The life time of this source would be extended however by means of efficient fuel consumption technology. Today, energy price and the reality to having efficient power productivity has forced the manufacturers to give a satisfactory declining trend on fuel consumptions per unit of work. The next problem can be O2. We know that only %16 of the atmosphere is oxygen. Carbon emission is not discussed here. But carbon as an energy source can be maintained much easier than O2. If we are not successful to enrich the atmosphere with adequate CO2 that we have, through photosynthesis with green zones, then O2 is a problem. As long as there is no other option for substitution of (FBF), we should take care of air pollution although CO2 is a vital combination for all the creatures living on the earth. The advantages of (FBF) are the infrastructures and powerful economical relations and ties with our living styles too. That is why other energy sources can never be attractive unless economically can give us the necessary and enough advantages.