Global warming is not a global crisis, declare scientists and researchers in climate and related fields, economists, policymakers, and business leaders, assembled at Times Square, New York City March 2008, participating in the 2008 International Conference on Climate Change. Their Manhattan Declaration on Climate Change reads "Resolving that scientific questions should be evaluated solely by the scientific method; Affirming that global climate has always changed and always will, independent of the actions of humans, and that carbon dioxide is not a pollutant but rather a necessity for all life; Recognising that the causes and extent of recently-observed climatic change are the subject of intense debates in the climate science community and that oft-repeated assertions of a supposed ‘consensus’ governments to legislate costly regulations on industry and individual citizens to encourage CO2 emission reduction will slow development while having no appreciable impact on the future trajectory of global climate change. Such policies will markedly diminish future prosperity and so reduce the ability of societies to adapt to inevitable climate change, thereby increasing, not decreasing human suffering;". They also note that warmer weather is generally less harmful to life on Earth than colder.

Manhattan Declaration