“To argue that human emissions of CO2 are forcing global warming requires all the known, and possibly chaotic, mechanisms of natural global warming to be critically analysed and dismissed. This has not even been attempted.”

— Ian Plimer , book Heaven and Earth

Heaven and Earth (2009)

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Ian Plimer 11

Australian geologist 1946

Ian Plimer book Heaven and Earth

Heaven and Earth (2009)

““Global warming” refers to the global-average temperature increase that has been observed over the last one hundred years or more. But to many politicians and the public, the term carries the implication that mankind is responsible for that warming. This website describes evidence from my group’s government-funded research that suggests global warming is mostly natural, and that the climate system is quite insensitive to humanity’s greenhouse gas emissions and aerosol pollution. Believe it or not, very little research has ever been funded to search for natural mechanisms of warming…it has simply been assumed that global warming is manmade. This assumption is rather easy for scientists since we do not have enough accurate global data for a long enough period of time to see whether there are natural warming mechanisms at work.”

Roy Spencer (1955) American meteorologist

Global Warming: Natural or Manmade? http://www.drroyspencer.com/global-warming-natural-or-manmade/

“There were no CO2 emitting industries in the Medieval Warming. This natural warming event was greater than the Late 20th Century Warming, which we are told is due to human emissions of CO2.”

Ian Plimer book Heaven and Earth

Heaven and Earth (2009)

“Mars enjoys global warming yet has almost no atmosphere. To my knowledge, there is no industry or human emissions of CO2 on Mars. There is strong evidence that the Sun drives climate on Mars. The Sun is probably also the main driving force for climate on Earth.”

Ian Plimer book Heaven and Earth

Heaven and Earth (2009)

“I'm not a global warming believer. I'm not a global warming denier. I'm a global warming agnostic who believes instinctively that it can't be very good to pump lots of CO2 into the atmosphere but is equally convinced that those who presume to know exactly where that leads are talking through their hats.”

Charles Krauthammer (1950–2018) American journalist

Column, May 30, 2008, "Carbon Chastity: The First Commandment of the Church of the Environment" http://jewishworldreview.com/cols/krauthammer053008.php3 at jewishworldreview.com.
Krauthammer’s column of February 20, 2014, published in The Washington Post under the title “The Myth of ‘Settled Science” http://www.washingtonpost.com/opinions/charles-krauthammer-the-myth-of-settled-science/2014/02/20/c1f8d994-9a75-11e3-b931-0204122c514b_story.html, begins with almost the same words.
2000s, 2008

“This goes back to the reason why alarmists abandoned the "global warming" term in favor of climate change. They can play this bait and switch, showing changes in climate (which always exist) and then blaming them on CO2. But there is no mechanism ever proposed by anyone where CO2 can change the climate directly without going through the intermediate step of warming. If climate is changing but we are not seeing warming, then the change can't be due to CO2.”

Anthony Watts (1958) American television meteorologist

Just where are those grid killing tornadoes anyway? http://wattsupwiththat.com/2009/06/17/just-where-are-those-grid-killing-tornadoes-anyway/, wattsupwiththat.com, June 17, 2009.
2009

“It seems that, notwithstanding the dramatic increases in manmade CO2 emissions over the last decade, the world's warming has stopped.”

Tony Abbott (1957) Australian politician

Quoted in "2009 Australia's second warmest year ever, according to Bureau of Meteorology figures" http://www.heraldsun.com.au/news/australias-second-warmest-year-ever-according-to-bureau-of-meteorology-figures/story-e6frf7jo-1225816322149 in the Herald Sun, January 5, 2010.
2010

“Despite the global warming, England is still not warm enough for him.”

Arsène Wenger (1949) French footballer and manager

José Antonio Reyes, (July 2007) http://news.bbc.co.uk/sport1/hi/funny_old_game/6900962.stm

“On the unfalsifiable theory of global warming:"Evidence that contradicts the global warming theory, climate kooks enlist as evidence for the correctness of their theory; every permutation in weather patterns—warm or cold—is said to be a consequence of that warming or proof of it.”

Ilana Mercer South African writer

"Reincarnation of the Reds," http://www.ilanamercer.com/phprunner/public_article_list_view.php?editid1=108 WorldNetDaily.com, December 29, 2006, The Colorado Springs Gazette, January 17, 2007, and The Orange County Register, "The Reds Have Become Greens," January 19, 2007.
2000s, 2007

“If CO2 derived from modern industrialisation is the culprit for global warming, then why did the global temperature increase from 1918 to 1940, decrease from 1940 to 1976, increase from 1976 to 1998 and decrease from 1998 to the present?”

Ian Plimer book Heaven and Earth

Heaven and Earth (2009)

“To argue that human emissions of CO2 are forcing global warming requires all the known, and possibly chaotic, mechanisms of natural global warming to be critically analysed and dismissed. This has not even been attempted.”

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