European Craft on Saturn Moon Finds Tantalizing Signs of Liquid -- The fact that Titan has a hydrocarbon atmosphere should point out the obvious to everyone here: Hydrocarbons (i.e. petrochemicals) DO NOT come from "fossils". They are geochemical in nature, not dependent upon former biological activity. Earth is going to continue making oil, as long as the tectonic plates continue to subduct, and as long as we have a molten core.