[8] In 1991 and 1992, Michaels collaborated with Fred Singer in writing articles for the Washington Times rejecting the scientific consensus on ozone depletion.

[1] Michaels said that he does not contest the basic scientific principles behind greenhouse warming and acknowledges that the global mean temperature has increased in recent decades.

He made the argument that the climate feedback system involving current warming trends was weaker than generally asserted, coming to a conclusion that set his views apart from that of the IPCC's estimates.

"[15] In May 1994 Richard Lindzen, Michaels, and Robert Balling served as expert witnesses on behalf of Western Fuels Association in St. Paul, Minnesota to determine the environmental cost of coal burning by state power plants.

[23] WFA founded the group in 1997, according to an archived version of its website, "as a vehicle for advocacy on climate change, the environmental impact of CO2, and fossil fuel use.

"[24] Office of Science and Technology Policy director, John Holdren,[25] told the U.S. Senate Republican Policy Committee in June 2003, "Michaels is another of the handful of U.S. climate-change contrarians … He has published little if anything of distinction in the professional literature, being noted rather for his shrill op-ed pieces and indiscriminate denunciations of virtually every finding of mainstream climate science.

[28] Although the Greening Earth Society was generally skeptical of the impact of climate change, it acknowledged some degree of global warming as real: "Fact #1.

[35] According to Fred Pearce, fossil fuel companies have helped fund Michaels' projects, including his World Climate Report, published every year since 1994, and his "advocacy science consulting firm", New Hope Environmental Services.