The International Conference on Climate Change is a conference series organized and sponsored by The Heartland Institute which aims to bring together global warming skeptics who "dispute that the science is settled on the causes, consequences, and policy implications of climate change." The first conference took place in 2008. As at 2017 there have been twelve conferences. Most of the events have been held in the United States, but there has been one in Australia and two in Germany.
The first conference was held in New York City. Speakers included climatologist Patrick J. Michaels and physicist S. Fred Singer.
The conference endorsed the work of the Nongovernmental International Panel on Climate Change (NIPCC), which is a group of skeptics led by Fred Singer that disputes the positions of the United Nations Intergovernmental Panel on Climate Change (IPCC). Singer prepared a critique of the IPCC Fourth Assessment Report called "Nature, Not Human Activity, Rules the Climate". This NIPCC report was published in March 2008 by the Heartland Institute.ABC News said the same month that unnamed climate scientists from NASA, Stanford, and Princeton who spoke to ABC about the report dismissed it as "fabricated nonsense." In a letter of complaint to ABC News, Singer said their piece used "prejudicial language, distorted facts, libelous insinuations, and anonymous smears". Singer also said that the anonymous scientists, "are easily identified as the well-known global warming zealots Jim Hansen, Michael Oppenheimer and Steve Schneider."
The conference led to the release of the Manhattan Declaration, declaring that carbon dioxide is essential for all life and calling for the immediate halt to any tax funded attempts to counteract climate change. The declaration says "assertions of a supposed 'consensus' among climate experts are false" and recommends "that all taxes, regulations, and other interventions intended to reduce emissions of CO2 be abandoned forthwith."