Armstrong Williams weighs in: He doesn't believe in the global warming hoax, but believes that trace amounts of CO2 are "pollution"

Global warming is irrelevant - The Hill's Pundits Blog

Whether that causes "global warming" I don't know, and I submit can't be proven given the paucity of the database — how can you prove an underlying climatic cycle that may be hundreds or thousands of years long in periodicity with just about 100 years or so of truly detailed and reliable data? And, once you understand that base cycle, you still have to prove that there is a causal connection — not a spurious correlation — between any observed deviation and the base cycle.
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Now, given you now know what I really think, whether it is connected with global warming or not, carbon-based pollution is just that — pollution. I'm anti-pollution, so I would support reasonable, commensurate steps to combat carbon-based pollution.