Changes

*'''Carbon dioxide is insignificant as a greenhouse gas.''' The level of CO₂ in the Earth's atmosphere is only 400 parts per million. 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> The IPCC claims that water vapor acts as a "positive feedback," i.e. warming creates more humidity, which leads to additional warming. There are humidity measurements going back to 1948, and they show no upward trend.<ref>"[https://wattsupwiththat.com/global-climate/ global climate]," ''Watt's Up with That''</ref> More humidity could lead to more clouds and therefore to cooling and to negative feedback. So why assume positive feedback? AGW works only if water vapor is a positive feedback, so that is what the IPCC must claim.<br/>Although Obama has denounced elevated carbon dioxide levels as "carbon pollution," greenhouse operators commonly increase the level of CO₂ to 1,000 ppm or more to enhance plant growth.<ref>"[https://www.sciencedaily.com/releases/2015/12/151210101819.htm Plant growth enhanced by increased carbon dioxide, but food webs give rise to significant variations]", ''Science News'', December 10, 2015.<br/>Harrison H. Schmitt and William Happer, "[http://arizonaskywatch.com/article/articles/In%20defense%20of%20carbon%20dioxide.pdf In Defense of Carbon Dioxide]," ''Wall Street Journal'', May 8, 2013.</ref>

*'''Carbon dioxide is insignificant as a greenhouse gas.''' The level of CO₂ in the Earth's atmosphere is only 400 parts per million. 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> The IPCC claims that water vapor acts as a "positive feedback," i.e. warming creates more humidity, which leads to additional warming. There are humidity measurements going back to 1948, and they show no upward trend.<ref>"[https://wattsupwiththat.com/global-climate/ global climate]," ''Watt's Up with That''</ref> More humidity could lead to more clouds and therefore to cooling and to negative feedback. So why assume positive feedback? AGW works only if water vapor is a positive feedback, so that is what the IPCC must claim.<br/>Although Obama has denounced elevated carbon dioxide levels as "carbon pollution," greenhouse operators commonly increase the level of CO₂ to 1,000 ppm or more to enhance plant growth.<ref>"[https://www.sciencedaily.com/releases/2015/12/151210101819.htm Plant growth enhanced by increased carbon dioxide, but food webs give rise to significant variations]", ''Science News'', December 10, 2015.<br/>Harrison H. Schmitt and William Happer, "[http://arizonaskywatch.com/article/articles/In%20defense%20of%20carbon%20dioxide.pdf In Defense of Carbon Dioxide]," ''Wall Street Journal'', May 8, 2013.</ref>

[[Image:NASA-1024x933.jpg|thumb|right|A composite map of [[Antarctica]] showing areas of greatest warming in red. The Wilkins Ice Shelf lies off the peninsula in the top left corner, and shows extensive warming. Overall, Antarctica shows little warming, and many areas to the  East (right) are almost cooling.<ref>Roberts, Greg (April 18, 2009). [http://www.news.com.au/antarctic-ice-is-growing-not-melting-away/story-0-1225700043191 "Antarctic ice is growing, not melting away."] News.com.au.  Retrieved on September 25, 2014.</ref>]]

[[Image:NASA-1024x933.jpg|thumb|right|A composite map of [[Antarctica]] showing areas of greatest warming in red. The Wilkins Ice Shelf lies off the peninsula in the top left corner, and shows extensive warming. Overall, Antarctica shows little warming, and many areas to the  East (right) are almost cooling.<ref>Roberts, Greg (April 18, 2009). [http://www.news.com.au/antarctic-ice-is-growing-not-melting-away/story-0-1225700043191 "Antarctic ice is growing, not melting away."] News.com.au.  Retrieved on September 25, 2014.</ref>]]

*'''The Earth has warmed or cooled many times. Historically, warm periods are associated with favorable climate.''' The [[Roman Warm Period]] (250 BC to 400 AD) featured temperatures comparable to those of modern times. This was followed by the Dark Ages Cold Period (450-950 AD).<ref>"[http://www.co2science.org/subject/d/summaries/dacpeurope.php Dark Ages Cold Period (Europe) - Summary]", ''CO₂ Science'', 1 June 2005.</ref> The Medieval Warm Period was even warmer than the Roman period and lasted from 900 to 1300.<ref>John P. Rafferty, "[https://global.britannica.com/science/medieval-warm-period Medieval warm period (MWP)]", ''Britannica''</ref> From the 14th century to the early 19th century, there was a Little Ice Age.<ref>John P. Rafferty, Stephen T. Jackson, "[https://global.britannica.com/science/Little-Ice-Age Little Ice Age (LIA)]", ''Britannica''.</ref><ref>See the graphs at "[http://www.climate4you.com/ Global temperatures]," Climate4you.</ref><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''. For a peer-reviewed paper, see Moberg, A., et al. 2005 "[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/moberg2005/nhtemp-moberg2005.txt 2,000-Year Northern Hemisphere Temperature Reconstruction]", ''World Data Center for Paleoclimatology''. The Moberg data set is charted [https://i0.wp.com/i90.photobucket.com/albums/k247/dhm1353/Moberg-1.png here].</ref>

*'''The Earth has warmed or cooled many times. Historically, warm periods are associated with favorable climate.''' The [[Roman Warm Period]] (250 BC to 400 AD) featured temperatures comparable to those of modern times. This was followed by the Dark Ages Cold Period (450-950 AD).<ref>"[http://www.co2science.org/subject/d/summaries/dacpeurope.php Dark Ages Cold Period (Europe) - Summary]", ''CO₂ Science'', 1 June 2005.</ref> The Medieval Warm Period was even warmer than the Roman period and lasted from 950 to 1300.<ref>John P. Rafferty, "[https://global.britannica.com/science/medieval-warm-period Medieval warm period (MWP)]", ''Britannica''</ref> From the 14th century to the early 19th century, there was a Little Ice Age.<ref>John P. Rafferty, Stephen T. Jackson, "[https://global.britannica.com/science/Little-Ice-Age Little Ice Age (LIA)]", ''Britannica''.</ref><ref>See the graphs at "[http://www.climate4you.com/ Global temperatures]," Climate4you.</ref><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''. For a peer-reviewed paper, see Moberg, A., et al. 2005 "[ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/moberg2005/nhtemp-moberg2005.txt 2,000-Year Northern Hemisphere Temperature Reconstruction]", ''World Data Center for Paleoclimatology''. The Moberg data set is charted [https://i0.wp.com/i90.photobucket.com/albums/k247/dhm1353/Moberg-1.png here].</ref>

*'''For leftists, the attraction of the theory is that it supports their agenda.''' 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.<ref>"[http://realclimatescience.com/the-corrupt-history-of-nasa-temperature-history/ The corrupt history of NASA temperature history]", ''Real Climate Science''.</ref><ref name="Time" /> When AGW came along, it was treated as an additional justification for this agenda.<br/>Steven Schneider, founding father of the AGW movement, was a global cooling believer in the early 1970s. "We have to offer up scary scenarios, make simplified, dramatic statements, and make little mention of any doubts we might have," he explained.<ref>This is from an article Schneider wrote for ''Discover'' magazine in 1989.[http://www.creationworldview.org/articles_view.asp?id=67]</ref> To Schneider, global cooling and global warming were just two "scary senarios." He could offer up whichever one was expedient.

*'''For leftists, the attraction of the theory is that it supports their agenda.''' 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.<ref>"[http://realclimatescience.com/the-corrupt-history-of-nasa-temperature-history/ The corrupt history of NASA temperature history]", ''Real Climate Science''.</ref><ref name="Time" /> When AGW came along, it was treated as an additional justification for this agenda.<br/>Steven Schneider, founding father of the AGW movement, was a global cooling believer in the early 1970s. "We have to offer up scary scenarios, make simplified, dramatic statements, and make little mention of any doubts we might have," he explained.<ref>This is from an article Schneider wrote for ''Discover'' magazine in 1989.[http://www.creationworldview.org/articles_view.asp?id=67]</ref> To Schneider, global cooling and global warming were just two "scary senarios." He could offer up whichever one was expedient.

*'''Carbon dioxide can be absorbed by promoting plant growth, an angle overlooked by the mainstream media.''' In fact, the increase in carbon dioxide in the atmosphere has already resulted in an increase in plant growth. If that's not enough, iron filings can be dumped at sea to encourage the growth of marine plants.<ref>Carrington, Damian, "[https://www.theguardian.com/environment/2012/jul/18/iron-sea-carbon Dumping iron at sea can bury carbon for centuries, study shows]" ''The Guardian'', 18 July 2012.</ref> Freeman Dyson, America's top physicist, has suggested genetically engineering trees to absorb more carbon.<ref>"[https://www.youtube.com/watch?v=BiKfWdXXfIs Freeman Dyson on the Global Warming Hysteria April, 2015]." Dyson recommends ''Cool It'' (2007) by Bjorn Lomborg as the best summary of the AGW issue.</ref>

*'''Carbon dioxide can be absorbed by promoting plant growth, an angle overlooked by the mainstream media.''' In fact, the increase in carbon dioxide in the atmosphere has already resulted in an increase in plant growth. If that's not enough, iron filings can be dumped at sea to encourage the growth of marine plants.<ref>Carrington, Damian, "[https://www.theguardian.com/environment/2012/jul/18/iron-sea-carbon Dumping iron at sea can bury carbon for centuries, study shows]" ''The Guardian'', 18 July 2012.</ref> Freeman Dyson, America's top physicist, has suggested genetically engineering trees to absorb more carbon.<ref>"[https://www.youtube.com/watch?v=BiKfWdXXfIs Freeman Dyson on the Global Warming Hysteria April, 2015]." Dyson recommends ''Cool It'' (2007) by Bjorn Lomborg as the best summary of the AGW issue.</ref>