George Kukla

George Kukla (Deceased)


  • Doctor of Natural Science (RNDr.), Charles University, Prague, (1953). [1]

According to an interview with Kukla on the program “Truthquest” at KHENLPFM Radio (June 29, 2010), he received his doctorate in 1971 at Charles University as opposed to 1953.


George Kukla was a micropalentologist and Special Research Scientist at the Lamont-Doherty Earth Observatory of Columbia University. He passed away on May 31, 2014. Kukla was an early believer of global cooling and has been described as a “pioneer in the study of solar forcing of climate changes.” [2], [10]

Kukla has been quoted in the early 70s in articles discussion the potential for global cooling [3], [4]  In the 1980s, Kukla also released research that suggested a global warming trend, [5] but has since reverted to the view that a future ice age is likely. [6]

He was the lead author of a paper that first supported Milutin Milankovic’s theory of glacial cycles by investigating the stratigraphy in deep-sea sediment cores from the southern Indian Ocean.

In his paper he wrote, “We are certain now that changes in the Earth’s orbital geometry caused the ice ages. The evidence is so strong that other explanations must now be discarded or modified.”

Stance on Climate Change

April 24, 2007

“The only thing to worry about global warming is the damage that can be done by worrying. Why are some scientists worried? Perhaps because they feel that to stop worrying may mean to stop being paid.” [6]

Key Quotes

June 24, 2007

“I feel we’re on pretty solid ground in interpreting orbit around the sun as the primary driving force behind ice-age glaciation. The relationship is just too clear and consistent to allow reasonable doubt…”

“What I think is this: Man is responsible for a PART of global warming. MOST of it is still natural.” [7]

Key Deeds

May 18, 2010

Kukla was a speaker (PDF) at the Heartland Institute‘s Fourth International Conference on Climate Change (ICCC4) in Chicago.

DeSmog has done research on the co-sponsors of the conference and found that 19 of the 65 sponsors (including Heartland itself) have received a total of over $40 million in funding since 1985 from ExxonMobil, Koch Industries family foundations or the Scaife family foundations.  

His presentation, titled “Interglacials Start with Global Cooling and End with Global Warming” can be viewed below. [8]


* Both organizations are divisions of the Energy Probe Research Foundation, which is directed by climate change skeptic and columnist Lawrence Solomon.


In addition to the following publications, Kukla is described as the co-author of a chapter in the book “Natural Climate Variability on Decade to Century Time Scales” published by the National Research Council.

Sample Publications:


  1. “George Jiri Kukla — Curriculum vitae and selected bibliography” (PDF). Geolines (Praha), 2 (1995).
  2. Directory of Faculty and Staff,” The Earth Institute, Columbia University. Accessed January, 2012.
  3. “Scientists Ask why World Climate Is Changing; Major Cooling May Be Ahead” (PDF), New York Times, May 21, 1975.
  4. “The Cooling World” (PDF), Newsweek, April 28, 1975.
  5. Robert Reinhold. “EVIDENCE IS FOUND OF WARMING TREND,” New York Times, October 19, 1981.
  6. An Unrepentant Prognosticator,” Gelf Magazine, April 24, 2007.
  7. Lawrence Solomon. “Forget warming – beware the new ice age.” National Post, June 24, 2007.
  8. 4th International Conference on Climate Change Program (PDF). Accessed January, 2012, from
  9. Marc Morano. “U.S. Senate Report: Over 400 Prominent Scientists Disputed Man-Made Global Warming Claims in 2007,” U,S, Senate Committee on Environment & Public Works, December 20, 2007.
  10. George Kukla, Contrarian Climate Scientist,” Lamont-Doherty Earth Observatory, June 6, 2014. Archived October 4, 2017. URL:

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