NOVELTY - Composition (I) of matter comprises a blend of wood (40-60%), paper (10-20%), cardboard (10-20%), non-chlorinated plastics (5-10%), rags (5-10%), rugs (5-10%) and an emission reducing agent, where the emission reducing agent is one or more of urea, calcium hydroxide, hydroquinone, anthraquinone, ammonium hydroxide, ammonia and an ammonium compound.    USE - (I) is useful in biofuel, which is useful for operating a combustor (all claimed).    ADVANTAGE - (I) is cost-effective and environmental friendly. (I) reduces: 30-80% of greenhouse gases such as carbon dioxide, sulfur dioxide and nitrous oxide; 30-80% of ash; and radioactive gases in air emissions such as uranium, mercury, lead, thorium, sulfur trioxide, carbonic acid, arsenic, nickel, beryllium, cadmium, barium, chromium, copper, molybdenum, zinc, selenium and radium.    DETAILED DESCRIPTION - Composition (I) of matter comprises a blend of wood (40-60%), paper (10-20%), cardboard (10-20%), non-chlorinated plastics (5-10%), rags (5-10%), rugs (5-10%) and an emission reducing agent, where the emission reducing agent is one or more of urea, calcium hydroxide, hydroquinone, anthraquinone, ammonium hydroxide, ammonia and an ammonium compound, the urea reduces nitrous oxide emissions, the calcium hydroxide reduces carbon dioxide emissions, the hydroquinone reduces sulfur emissions, the anthraquinone reduces sulfur emissions, the ammonium hydroxide reduces carbon dioxide emissions, and the ammonia and ammonium compound reduce carbon dioxide emissions, when the composition is combusted. INDEPENDENT CLAIMS are included for:    (1) a biofuel comprising a blend of municipal solid waste, selected recyclables and/or construction, and demolition waste including (I), where the blend has a particle range of 1/8th inch-6 inches and after combustion, less than 10% ash, non-detectable levels of sulfur, chlorine, and heavy metals, a non-detectable level of sodium chloride, and a non-detectable level of polychlorinated biphenyls; and    (2) a method of operating a combustor comprising introducing a biofuel into a combusting section of the combustor (110) and causing combustion of the introduced biofuel (120).    DESCRIPTION OF DRAWING(S) - The figure shows a flowchart of operating the combustor.    Combustor (110)    Introduced biofuel. (120)