Segment 4
sites/default/files/Air_Force_New_Zealand_Ice_Ages_CO2_0.mp4
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sites/default/files/Air_Force_New_Zealand_Ice_Ages_CO2.mp4
CO2 & THE ATMOSPHERE

How the warming effects of carbon dioxide were studied by the US Air Force immediately after World War 2, and why the varying orbit of Earth around the Sun drove the cycle of the Ice Ages. Alley demonstrates, through the history of the Franz Josef Glacier in New Zealand, that orbital variations (aka “natural variation”) alone did not make things cooler or warmer: that took the feedback effect of falling and rising levels of CO2.

Annotated Script
Please refer to pages 29-47

Educational content for this Segment is currently under development.

ANNOTATED SCRIPT:
ADDITIONAL MATERIALS COMING SOON
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