"Carbon dioxide is....being portrayed as a pollutant; in fact, it makes things grow, and it is not toxic to humans."

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The Earth is warming but physical evidence from around the world tells us that human-emitted carbon dioxide has played only a minor role in it. Instead, the mild warming seems to be part of a natural 1,500-year climate cycle (plus or minus 500 years) that goes back at least one million years.

— Fred Singer