Thread: Carl Sagan from 1985
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Old 10-06-2022, 02:41 PM
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MattT
Reflecting on Refracting

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Carl Sagan from 1985
You Tube link to the great Carl Sagan speaking on greenhouse effect in 1985….nearly 40 years ago!

https://youtu.be/Wp-WiNXH6hI
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