claim: The statement that so-called greenhouse gases,  especially CO2, contribute to near-surface atmospheric warming is in  glaring contradiction to well-known physical laws relating to gas and  vapour, as well as to general caloric theory.'
evidence: The burning of long-buried fossil fuels releases CO 2 containing carbon of different isotopic ratios to those of living plants, enabling distinction between natural and human-caused contributions to CO 2 concentration.