A lot of human energy, both thermal and electrical power source will be limited and there are still environmental toxicity. And destroy the atmosphere of air.
Power consumption of both electricity and heat man Origin energy limited addition, then there is still the problem of environmental toxicity and safe air, floor patterns.
The use of energy and more of the human side of heat and electric power sources in addition to a limited environment, and there is still a problem, and it is poisonous climate weather and destroy.