“Carbon dioxide has never entered the atmosphere so fast. In 1976 the carbon dioxide level was at 0.03 percent. We've lived through a change to 0.04 percent.”

—  Bill Nye

[NewsBank, 'Science Guy' Visits Volcano, The Chronicle, Centralia, Washington, May 18, 2009, Paula Collucci]

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American science educator, comedian, television host, actor… 1955

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“It will take more time for the change we have to effect, but we don't have more time. The carbon dioxide on Earth, just in the last four years, has increased from.03 percent to.04 percent. And the change will have a significant impact on everyone.”

Bill Nye (1955) American science educator, comedian, television host, actor, writer, scientist and former mechanical engineer

[NewsBank, Nye: We must all save the Earth, The Madison Courier, Madison, Indiana, February 21, 2009, Pat Whitney]

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“Carbon dioxide, Mister Speaker, is a natural byproduct of nature. Carbon dioxide is natural. It occurs in Earth. It is a part of the regular lifecycle of Earth. In fact, life on planet Earth can't even exist without carbon dioxide. So necessary is it to human life, to animal life, to plant life, to the oceans, to the vegetation that's on the Earth, to the, to the fowl that — that flies in the air, we need to have carbon dioxide as part of the fundamental lifecycle of Earth…There isn't one such study because carbon dioxide is not a harmful gas, it is a harmless gas. Carbon dioxide is natural. It is not harmful. It is part of Earth's life cycle…And yet we're being told that we have to reduce this natural substance and reduce the American standard of living to create an arbitrary reduction in something that is naturally occuring in the earth.”

Michele Bachmann (1956) American politician

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http://wonkroom.thinkprogress.org/2009/04/24/bachmann-harmless-co2/
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“Pit Greenhouses… greenhouse plants… need additional sources of carbon dioxide.”

Ken Kern American writer

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Sarah Palin photo

“Simply waiting for low-carbon-emitting renewable capacity to be large enough will mean that it will be too late to meet the mitigation goals for reducing [carbon dioxide] that will be required under most credible climate-change models.”

Sarah Palin (1964) American politician

Palin sees gas drilling as step to curb global warming, Murphy, Kim, April 15, 2009, LA Times, 2011-10-27 http://articles.latimes.com/2009/apr/15/nation/na-palin15,
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Edward Teller photo

“Ladies and gentlemen, I am to talk to you about energy in the future. I will start by telling you why I believe that the energy resources of the past must be supplemented. First of all, these energy resources will run short as we use more and more of the fossil fuels. But I would […] like to mention another reason why we probably have to look for additional fuel supplies. And this, strangely, is the question of contaminating the atmosphere. […. ] Whenever you burn conventional fuel, you create carbon dioxide. […. ] The carbon dioxide is invisible, it is transparent, you can’t smell it, it is not dangerous to health, so why should one worry about it?
Carbon dioxide has a strange property. It transmits visible light but it absorbs the infrared radiation which is emitted from the earth. Its presence in the atmosphere causes a greenhouse effect […. ] It has been calculated that a temperature rise corresponding to a 10 per cent increase in carbon dioxide will be sufficient to melt the icecap and submerge New York. All the coastal cities would be covered, and since a considerable percentage of the human race lives in coastal regions, I think that this chemical contamination is more serious than most people tend to believe.”

Edward Teller (1908–2003) Hungarian-American nuclear physicist

As quoted in Benjamin Franta, "On its 100th birthday in 1959, Edward Teller warned the oil industry about global warming" https://www.theguardian.com/environment/climate-consensus-97-per-cent/2018/jan/01/on-its-hundredth-birthday-in-1959-edward-teller-warned-the-oil-industry-about-global-warming, The Guardian, 1 January 2018.

Stephen Hawking photo

“The danger is that global warming may become self-sustaining, if it has not done so already. The melting of the Arctic and Antarctic ice caps reduces the fraction of solar energy reflected back into space, and so increases the temperature further. Climate change may kill off the Amazon and other rain forests, and so eliminate once one of the main ways in which carbon dioxide is removed from the atmosphere. The rise in sea temperature may trigger the release of large quantities of carbon dioxide, trapped as hydrides on the ocean floor. Both these phenomena would increase the greenhouse effect, and so global warming further. We have to reverse global warming urgently, if we still can.”

Stephen Hawking (1942–2018) British theoretical physicist, cosmologist, and author

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“I think it is possible to get the carbon dioxide emissions down and to get the temperature increase slowed down. It just requires everybody to work together to do it.”

Joanna Haigh (1954) British physicist

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“Beyond our normal twenty-year outlook period, we recently attempted a forecast of the CO2 [carbon dioxide] build-up. We assumed different growth rates at different times, but with an average growth rate in fossil fuel use of about one percent per year starting today, our estimate is that the doubling of atmospheric CO2 levels might occur sometime late in the 21st century. That includes the impact of a synfuels industry. Assuming the greenhouse effect occurs, rising CO2 concentrations may begin to induce climactic changes around the middle of the 21st century.”

Edward E. David Jr. (1925–2017) American engineer

Keynote address at the Lamont–Doherty Earth Observatory on the Palisades, New York campus of Columbia University (October 26, 1982) ( Inventing the Future: Energy and the CO2 "Greenhouse Effect", October 26, 1982, December 22, 2018, Exxon, w:Edward E. David Jr., Edward E., David Jr. http://www.climatefiles.com/exxonmobil/inventing-future-energy-co2-greenhouse-effect/,)

Andrey Illarionov photo

“We have received no single argument in favour of this document except political pressure. No link has been established between carbon dioxide emissions and climate change. No other objective facts have been presented in recent time. The IPCC's reports in 1990 and 1995 show it clearly.”

Andrey Illarionov (1961) Russian politician

"Q&A: Putin's Critical Adviser," 2005

Ze Frank photo

“Look what I found; a litter version of the Internet! This used to be something that could convert carbon dioxide to oxygen using only sunlight, water, and a few nutrients. But now it's way cooler; it has two functions. You can either put little words on it, or crumple it up into a tiny ball and throw it!”

Ze Frank (1972) American online performance artist

http://www.zefrank.com/theshow/archives/2007/04/best_of_050806.html
"The Show" (www.zefrank.com/theshow/)

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