Climate science may be complicated, but the science of man-made global warming is not. The chemistry and thermodynamics of green-house gases are well understood, their escalating concentrations well documented, and the trends unmistakable. The scientific consensus is clear, with climate scientists and scientific organizations in unequivocal agreement. (Remember tobacco smoke doubters?) Climate disruption is real. The question is the best way to deal with it.
See also IPCC on Facebook.