Civilizations of the Past Have Come and Gone Due to Climate Change

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During the 1990s, many scientists engaged in debates on global warming, which is factually correct; however, in the 1950s to the ‘70s, the debate and media headlines were on global cooling and the coming next Ice Age. “New Ice Age Coming” blared the front page of The New York Times on July 18, 1970.

Also, climate change has been front page news even in the 1930s:


Archeologists and geologists know more about the effect of climate change on civilizations of the past than today’s climate change prognosticators who predict for the future.

Perhaps there are explanations for the appearance and disappearance of many civilizations over the centuries since the end of the Last Great Ice Age 13,000 years ago – absent man-made CO2. A few examples of Mother Nature at work:

  • Indus Valley civilization 3300 B.C. to 1300 B.C.: drought.
  • An Egyptian kingdom collapsed from drought 4,200 years ago.
  • The Cambodian city of Angkor in the early 1400s: drought.
  • The Sahara was not always a desert: https://www.nature.com/scitable/knowledge/library/green-sahara-african-humid-periods-paced-by-82884405/
  • The Mayan civilization, 2000 B.C. to 950 A.D.: drought.
  • Cahokia civilization, Mid-America, 700 to 1350: Little Ice Age, drought.
  • Tionku Civilization, South America, 300 B.C. to 1100 A.D.: drought.
  • Rapa Nui civilization, Easter Island, Little Ice Age: drought.
  • Pueblo Civilization, Colorado Plateau, 300 B.C. to 1225 A.D.: drought.

In no instance was their evidence of humans producing CO2 causing the climate changes the Earth has experienced during these times.

Patrick Mosman

 Editor’s Note: The overwhelming majority of climate scientists do agree that human activities, particularly the emission of greenhouse gases such carbon dioxide, are the primary drivers of global warming and climate change.

“There is unequivocal evidence that Earth is warming at an unprecedented rate,” NASA states on its website. “Human activity is the principal cause.”

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