NASA’s CO~2~-Tracking Satellite Deconstructs Earth’s Carbon Cycle

This much scientists know: Humans pump about 40 billion tons of CO2 into the atmosphere every year. Less clear is where the planet puts it. About half of it stays in the air, where it adds to the annual, two- to three-part-per-million increase in atmospheric CO2 concentration and the gradual warming of the planet. The …

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