We are proposing global carbon dioxide recycling which gives a final solution not only to avoid global warming but also to supply abundant energy. Power generation by solar cell on only less than 1 % of the main desert area on the Earth is sufficient for generation of electricity necessary for all people in the whole world. Because the electricity cannot be transmitted more than 500 km, at the seaboard of deserts the electricity will be used for hydrogen production by seawater electrolysis. Since hydrogen combustion facilities are not widely distributed, hydrogen will be used for production of methane by the reaction with carbon dioxide, methane being used widely as liquefied natural gas. After combustion of methane, carbon dioxide will be recovered at large fuel combustion plants at energy consuming districts and sent back to the seaboard of the deserts. Key materials for global carbon dioxide recycling are active cathodes for hydrogen production in seawater electrolysis, stable anodes for oxygen evolution without chlorine evolution even in seawater electrolysis and active catalysts for production of only methane from carbon dioxide. We succeeded to tailor these key materials and substantiated the idea by building a prototype plant which has successfully been operating since March 1996.