Carbon dioxide has never entered the atmosphere so fast. In 1976 the carbon dioxide level was at 0.03 percent. We've lived through a change to 0.04 percent. (Bill Nye)

Carbon dioxide has never entered the atmosphere so fast. In 1976 the carbon dioxide level was at 0.03 percent. We've lived through a change to 0.04 percent.

Bill Nye

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atmosphere carbon change dioxide fast level percent

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