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The primary attraction of the theory has always been political rather than scientific
Difficulties with the theory:
Difficulties with the theory:
*90 to 95 percent of the greenhouse effect is due to water vapor.<ref>Friedenreich and Ramaswamy, "Solar Radiation Absorption by Carbon Dioxide, Overlap with Water, and a Parameterization for General Circulation Models," Journal of Geophysical Research 98 (1993):7255-7264)</ref> There are humidity measurements going back to 1948, and no upward trend.<ref>[https://wattsupwiththat.com/global-climate/ global climate]</ref>
*'''Carbon dioxide is not a major greenhouse gas.''' Ninety to 95 percent of the greenhouse effect is due to water vapor.<ref>Friedenreich and Ramaswamy, "Solar Radiation Absorption by Carbon Dioxide, Overlap with Water, and a Parameterization for General Circulation Models," Journal of Geophysical Research 98 (1993):7255-7264)</ref> There are humidity measurements going back to 1948, and no upward trend.<ref>[https://wattsupwiththat.com/global-climate/ global climate]</ref>
*Warming has occurred at various times in the past. It has always been associated with favorable climate. The [[Roman Warm Period]] of ancient times was followed by the Dark Ages Cold Period of the Early Middle Ages. In the Late Middle Ages, there was the Medieval Warm Period. From the 14th century to the early 19th century, there was a Little Ice Age.<ref>Bastasch, Michael, "[http://dailycaller.com/2013/12/13/study-earth-was-warmer-in-roman-medieval-times/ Study: Earth was warmer in Roman, Medieval times]", ''The Daily Caller''</ref>
*'''The Earth has warmed or cooled many times. Historically, warm periods are associated with favorable climate.''' The [[Roman Warm Period]] of ancient times was followed by the Dark Ages Cold Period of the Early Middle Ages. In the Late Middle Ages, there was the Medieval Warm Period. From the 14th century to the early 19th century, there was a Little Ice Age.<ref>Bastasch, Michael, "[http://dailycaller.com/2013/12/13/study-earth-was-warmer-in-roman-medieval-times/ Study: Earth was warmer in Roman, Medieval times]", ''The Daily Caller''</ref>
*'''The attraction of the theory is that supports a political agenda that believers are committed to.''' The environmentalist agenda of renewables, solar energy, conservation, and world government was put together in the 1970s in response to the energy crisis and to the overpopulation scare. At that time, most scientists thought the Earth was cooling. Steven Schneider, godfather of the AGW movement, was a global cooler believer in the early 1970s. AGW was an additional set of justifications for the cause. Scratch an AGW believer and there is an overpopulationist or world government socialist underneath.
Natural periods of global warming and global cooling are expected to occur regardless of human activity, and not long ago liberals were demanding more government control to combat an alleged cooling in temperatures, with some scientists warning of a possible ice age.<ref name="Time">"Science: Another Ice Age?" (June 24, 1974). ''Time'' magazine. Retrieved on September 25, 2014.</ref> [[Global cooling]], a theory that predates global warming, obviously occurs naturally many times throughout [[Earth|Earth's]] geological history.<ref name="dissidents">"After any given warming phase begins, thousands of years later the cyclical [[Milankovitch]] decrease in the sun's heat kicks in. The warming stops, reverses and an [[ice age]] ensues." Cockburn, Alexander (June 9–11, 2007). [http://www.counterpunch.org/cockburn06092007.html "Dissidents against dogma"]. Counterpunch. Retrieved on September 25, 2014.</ref> The ease of refutation of anthropogenic global cooling claims foretells the eventual fate of the current global warming hysteria.
Natural periods of global warming and global cooling are expected to occur regardless of human activity, and not long ago liberals were demanding more government control to combat an alleged cooling in temperatures, with some scientists warning of a possible ice age.<ref name="Time">"Science: Another Ice Age?" (June 24, 1974). ''Time'' magazine. Retrieved on September 25, 2014.</ref> [[Global cooling]], a theory that predates global warming, obviously occurs naturally many times throughout [[Earth|Earth's]] geological history.<ref name="dissidents">"After any given warming phase begins, thousands of years later the cyclical [[Milankovitch]] decrease in the sun's heat kicks in. The warming stops, reverses and an [[ice age]] ensues." Cockburn, Alexander (June 9–11, 2007). [http://www.counterpunch.org/cockburn06092007.html "Dissidents against dogma"]. Counterpunch. Retrieved on September 25, 2014.</ref> The ease of refutation of anthropogenic global cooling claims foretells the eventual fate of the current global warming hysteria.