Any scientific theory can have lots of supporting evidence, however it only needs one piece of evidence to disprove a theory.  We have had not one, but many papers with evidence that disproves the C02 AGW theory.  Douglas Cotton, B.Sc (Physics), B.A.(Econ), Dip.Bus.Admin shows not only why C02 is not the problem, but offers a very plausable explanation as to the causes of our changing climate.