Climate change is not an esoteric subject. It has important impacts to our living. Bush fires and floodings have reduced our usable land areas for agriculture and housing development, causing rapid inflation. Climate scientists and environmental scientists emphasize the importance of reducing the load of CO2 in our atmosphere. We try to present a practical method to reduce CO2 emissions of power plant smokestack by channeling the treated and filtered flue gas through a cooling chamber and then a photosynthesis chamber that turns carbon dioxide and steam components into oxygen and glucose. Required special instruments are illustrated with figures, and heat exchanges are illustrated with data and equations. Near the end, application aids are provided by comparing the data with real power plant data. In conclusion, reasons are given for why applying the method will stimulate the economy and prevent contamination of drinking water. Although the examples presented here are for the U.S., the methodology can be generalized to all highly industrialized countries.