Changes

An analysis of weather station data by U.S. climate researcher [[Roy Spencer]] shows no significant warming since 1943. Unlike the official weather station record, Spencer's data includes only those stations that recorded temperature at a consistent time of day.<ref name="Spencer" /> The heating predicted by AGW but not detected in the temperature record is sometimes said to be accumulating in the oceans. But a study by the Scripps Institution of Oceanography found that ocean temperature has risen by only 0.1 degree Celsius in the last fifty years.<ref>"[https://dailycaller.com/2018/01/05/new-study-shows-past-research-on-rising-ocean-temps-built-on-faulty-science/ New Study Shows Past Research On Rising Ocean Temps Built On Faulty Science]," ''The Daily Caller'', 01/05/2018.</ref>

An analysis of weather station data by U.S. climate researcher [[Roy Spencer]] shows no significant warming since 1943. Unlike the official weather station record, Spencer's data includes only those stations that recorded temperature at a consistent time of day.<ref name="Spencer" /> The heating predicted by AGW but not detected in the temperature record is sometimes said to be accumulating in the oceans. But a study by the Scripps Institution of Oceanography found that ocean temperature has risen by only 0.1 degree Celsius in the last fifty years.<ref>"[https://dailycaller.com/2018/01/05/new-study-shows-past-research-on-rising-ocean-temps-built-on-faulty-science/ New Study Shows Past Research On Rising Ocean Temps Built On Faulty Science]," ''The Daily Caller'', 01/05/2018.</ref>

The theory that "greenhouse gases" have a greater warming effect than other gases goes back to the 19th century. The idea that carbon dioxide emissions might lead to catastrophic warming was introduced by Carl Sagan in the 1960s. He was inspired by research on the atmosphere of Venus. Around 1978, the environmental movement decided to promote Sagan's theory. For environmentalists, the theory provided an additional justification for their agenda. The movement was already advocating energy conservation and renewables as a response to the "energy crisis." That is to say, a desired political outcome was agreed upon and then a "scientific" justification was developed.

The theory that "greenhouse gases" have a greater warming effect than other gases goes back to the 19th century. The idea that carbon dioxide emissions might lead to catastrophic warming was introduced by Carl Sagan in the 1960s. He was inspired by research on the atmosphere of Venus. Around 1978, the environmental movement decided to promote Sagan's theory. The movement was already advocating energy conservation and renewables as a response to the "energy crisis." That is to say, a desired political outcome was agreed upon and then a "scientific" justification was developed.

==Difficulties with the theory==

==Difficulties with the theory==