I wonder to what extent the referenced scientists considered our Molten Core, the Earths Magnetic Field, the Moon, Sunspots (or Solar activity) and the timing of the Solar activity, and our orbital relationship to the Sun. I personally believe that Mankind has no measurable comparable impact on the changing climate of the Earth. I wonder to what extent the scientists have a vested interest in man causing climate change; especially those engaged in free enterprise, in contrast to those who practice biomass burning and crude manufacturing, etc.? I remain skeptical.