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Taking CO2 out of the air would be an absurdly expensive way to fight climate change
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this post was submitted on 15 Apr 2024
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Expensive is the wrong word here, most of these calculations are not about money, but energy, they are about doing stupid things like using power from burning coal to collect CO2 emitted from it...at a net waste of energy. It literally emits more CO2 than doing nothing (unless all your energy and factories producing solar panels and wind turbines and cars and infrastructure already run on green energy). It is only good for greenwashing in the near to medium future.
It's a net loss, until you consider: You can pump that CO2 into oil wells to get more oil. That's what most CO2 collection is used for. The collection part is typically stopped when the oil runs out.
It makes much more sense when you realize the point was never to reduce atmospheric CO2.