NOVELTY - Utilizing carbon dioxide and waste heat from flue or exhaust gas to produce synthetic gas involves supplying gasification reactor with flue or exhaust gas; controlling flue or exhaust gas supplied to gasification reactor; supplying oxidant to gasification reactor; recycling waste heat to provide thermal energy to gasification reactor; inducing thermochemical reaction between carbon dioxide and feedstock in the gasification reactor to produce synthetic gas; cleaning and collecting synthetic gas for subsequent use.    USE - For utilizing carbon dioxide and waste heat from flue or exhaust gas to produce synthetic gas useful for vehicle fuels and other useful chemicals.    ADVANTAGE - The method produces economical and ecologically desirable synthetic gas in without pollution or without producing greenhouse gas emissions during the transformation. The method allows use of high level energy contained within the synthetic gas for increasing reaction rates and minimizes required amounts of feedstock fuel; reducing dependence on fossil fuels; combats global warning by reducing harmful emissions that affect the ozone layer; provides compatibility with existing equipment and requiring a small capital investment; provides a residence time for biomass fuels within the reactor that can be precisely controlled; and provides low levels of particulate emissions and lower inorganic content of biomass fuels which results in reduced emission of toxic materials and thermal energy.    DETAILED DESCRIPTION - Method of utilizing carbon dioxide and waste heat contained in flue or exhaust gas from its generator to produce a synthetic gas involves capturing the flue or exhaust gas and supplying to gasification reactor; controlling amount of flue or exhaust gas supplied to gasification reactor; supplying an oxidant to gasification reactor, where the oxidant is pure oxygen; controlling amount of the oxidant to gasification reactor; recycling the waste heat to provide thermal energy to gasification reactor; inducing thermochemical reaction between the carbon dioxide and feedstock in the gasification reactor, to produce the synthetic gas; cleaning the synthetic gas; and collecting the synthetic gas for subsequent use; utilizing the waste heat from the flue or exhaust gas through the thermal energy exchange with the feedstock in the gasification reactor; sustaining an operating temperature of the gasification reactor within desired temperature range to convert the carbon dioxide into the synthetic gas by increasing a reaction efficiency of the thermochemical reaction; reducing greenhouse gases produced in the generator through subsequent process of the flue or exhaust gas; combating with global warming; providing commercial products and reducing waste products; and providing reduction of dependence of fossil fuels. The feedstock comprises at least one carbonaceous material from the list containing wood fractions, coal and biomass.    DESCRIPTION OF DRAWING(S) - The figure shows process flow diagram of method to utilize carbon dioxide and heat from flue or exhaust gas.    System to utilize carbon dioxide and heat from flue or exhaust gas (10)    Gasification thermochemical reactor (20)    Feedstock fuel (24)    Power or heat generators (50)    Synthetic gas flow (84)