alt Hacker NewsA better title would be "More efficient method to capture CO2 from the atmosphere." The method is not objectively efficient, but may be more efficient than other methods (solvents/sorbents) used for DAC.
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HPsquared • today at 3:00 PM
Yes it's important to distinguish "efficiency getting closer to theoretical maximum" from "actually cheap and economically feasible".
I gave my engineering students a CO2 removal design problem once, and at the end, asked why the theoretical efficiency had increased in the time since the textbook was written. The answer was that the concentration of CO2 in the atmosphere was higher.