Zeev's Turnips Talk Politics (ZTTP)

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Myth #2: Humans Are Causing Global Warming. Scientists do not agree that humans discernibly influence global climate because the evidence supporting that theory is weak. The scientific experts most directly concerned with climate conditions reject the theory by a wide margin.


A Gallup poll found that only 17 percent of the members of the Meteorological Society and the American Geophysical Society think that the warming of the 20th century has been a result of greenhouse gas emissions - principally CO2 from burning fossil fuels. [See Figure II.]

Only 13 percent of the scientists responding to a survey conducted by the environmental organization Greenpeace believe catastrophic climate change will result from continuing current patterns of energy use.

More than 100 noted scientists, including the former president of the National Academy of Sciences, signed a letter declaring that costly actions to reduce greenhouse gases are not justified by the best available evidence.
While atmospheric carbon dioxide has increased by 28 percent over the past 150 years, human-generated carbon dioxide could have played only a small part in any warming, since most of the warming occurred prior to 1940 - before most human-caused carbon dioxide emissions.