• 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, Fred S. Singer, Dennis Avery (2006). “Unstoppable Global Warming: Every 1,500 Years”, p.9, Rowman & Littlefield Publishers