Carbon Dioxide Removal Primer

Carbon dioxide removal offers a way to change the math. Extract large amounts of CO2 from the atmosphere and “negative emissions” could, conceivably, balance out the positive variety. It might even be feasible to cross the threshold of catastrophe and then suck enough carbon out of the…

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“At the beginning of the cycle, the equipment sucks in air,” she went on. “The CO2 sticks to specific chemicals inside the capture unit. We heat up the chemicals and that releases the CO2.” This CO2—the Climeworks CO2—is then added to the club-soda mixture from the power plant as it makes its way to the injection site. Even without any help, most o

One idea is to remove carbon dioxide from the air and extract the carbon, though that’s an expensive process.

Carbon removal or carbon drawdown is widely recognised as a requirement.

With all of these alternatives, the challenge is much the same as with direct air capture: scale. Ning Zeng is a professor at the University of Maryland and the author of the “wood harvest and storage” concept. He has calculated that to sequester five billion tons of carbon per year, ten million tree-burial trenches, each the size of an Olympic swi