And if you don't trust NASA, if you don't want to take their word for it, you can just take a look at The Keeling curve reflects the concentration of carbon dioxide in the atmosphere. It's a known thing. It's done by measurement. I hope we still believe in the Senate in measurement. This chart shows what's called the Keeling curve. (03:45–03:52)
CLAIM
Asserts that the Keeling curve measures atmospheric CO2 concentrations.
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