The Case for Waiting1. To meet the urgency of the problem, we must spend limited budgets on the most cost-effective ways to curtail emissions now. Scientific American nicely illustrated the results of a meta-analysis that compared techniques for scrubbing carbon dioxide out of the atmosphere, from reforestation and soil sequestration to biochar and bioenergy with CO2 capture. Costs per ton removed were 3–4 times higher for direct-air capture than for the other options. Indeed, the Nature Communications st
Source: The Direct-Air Capture Debate
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