NOVELTY - Producing hydrocarbon molecules from biomass, by pre-processing biomass by physical or mechanical breakdown, chemical degradation or a combination of physical or mechanical breakdown and chemical degradation to form a biomass fiber slurry; introducing biomass fiber slurry into a first stage bioreactor; introducing microorganisms to the slurry in the bioreactor, incubating the microorganisms with the slurry in an atmospheric pressure of near-vacuum; removing a hydrocarbon slurry from the bioreactor; and separating the hydrocarbon molecules from the hydrocarbon slurry.    USE - The process is useful for producing hydrocarbon molecules from biomass, where the biomass is pulp mill waste or pulp wood waste, and farming debris or yard waste (all claimed).    ADVANTAGE - The method enables to produce hydrocarbon molecules from biomass by utilizing microorganisms that are resistant to extreme heat and pressure. The bioengineered hydrocarbons are cost-efficient, renewable and environmentally responsible hydrocarbons which are the raw materials necessary for many other manufactured products, such as fuels, polymers, chemicals and solvents.    DETAILED DESCRIPTION - Producing hydrocarbon molecules from biomass, involves pre-processing the biomass by physical or mechanical breakdown, chemical degradation or a combination of physical or mechanical breakdown and chemical degradation to form a biomass fiber slurry; introducing the biomass fiber slurry into a first stage bioreactor; introducing microorganisms to the biomass fiber slurry in the first stage bioreactor, the microorganisms (a) being resistant to extreme heat and pressure, (b) comprising nucleic acid molecules encoding enzymes which degrade compounds selected from the group consisting of cellulose, lignin, xylan and hemicellulose, and (c) capable of generating hydrocarbon molecules from degraded cellulose, lignin, xylan and hemicellulose; incubating the microorganisms with the biomass fiber slurry in the first stage bioreactor at 70-120 degrees F, an atmospheric pressure of near-vacuum, and a pH of between 0.5 and 2.0 for microorganisms which are acidophilic or a pH of between 7.0 and 9.0 for microorganisms which are basophilic for 180 days to allow (i) the microorganisms to produce the enzymes which degrade compounds selected from cellulose, lignin, xylan and hemicellulose, (ii) the produced enzymes to degrade the cellulose, lignin, xylan and hemicellulose and (iii) the microorganisms to generate hydrocarbon molecules from the degraded cellulose, lignin, xylan and hemicellulose; removing a hydrocarbon slurry from the first stage bioreactor, the hydrocarbon slurry comprising hydrocarbon molecules, an aqueous solution comprising enzymes produced by the microorganisms, and sludge comprising microorganisms and non-hydrocarbon byproducts of enzymatic degradation of cellulose, lignin, xylan and hemicellulose; and separating the hydrocarbon molecules from the hydrocarbon slurry.