![]() Some removed carbon dioxide could be reused in products, like fuels, chemicals, and cement, but nothing like 10 billion tons a year. Given these costs and scales, the carbon-removal sector isn’t likely to ever fully stand up on its own, because there’s little commercial value in it, particularly when the end use of the carbon is burying it underground. But the approaches vary widely in terms of reliability, durability, scalability, environmental dangers, technical risks, and costs. Researchers and startups are exploring a wide variety of potential ways to dramatically increase carbon removal, including engineering plants that suck up more CO 2, spreading carbon dioxide–trapping minerals in our soils and seas, and burying or sinking biomass. ![]() It would take 10,000 DAC hubs with the capacity of the ones funded on Friday to reach it. But by some estimates, nations may have to collectively pull down some 10 billion tons a year by midcentury to have a good shot at keeping the planet from warming beyond 2 ☌. How much the world will need to remove will depend on how much more we add, and how the climate responds. And that’s all on top of radical cuts in greenhouse-gas emissions. Given how much carbon dioxide the world has already pumped into the atmosphere, a growing body of research finds that nations may need to draw down billions of tons of carbon dioxide per year to keep climate change in check. ![]() It is distinct from, but often confused with, carbon-capture technology that prevents emissions from leaving a power plant or industrial facility. Direct-air-capture plants generally rely on large fans to draw in ambient air and then trap carbon dioxide molecules using liquid solvents or solid sorbents.
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