Yeah, before reading one of the carbon capture from the atmosphere papers, I hadn’t thought deeply about the challenge. Then I realized “oh, we’re talking about

Yeah, before reading one of the carbon capture from the atmosphere papers, I hadn’t thought deeply about the challenge. Then I realized “oh, we’re talking about 350-450 ppm” which is less than 1 in 2000. Even though that CO2 is there and it’s damaging, you have to be really good at filtering to focus your energy on anything at a 1/2000 rate. By contrast, the tailpipe folks (like [1]) or the smokestack ones have >10% of the emissions as CO2! (Figure 3 in the paper, also directly here [2]). It’s literally “1 in 10” versus nearly “1 in 500”. You can be a lot less fancy when the density of your target is nearly 50x higher. [1] https://www.frontiersin.org/articles/10.3389/fenrg.2019.00143/full https://www.frontiersin.org/articles/10.3389/fenrg.2019.0014... [2] https://www.frontiersin.org/files/Articles/465010/fenrg-07-00143-HTML/image_m/fenrg-07-00143-g003.jpg https://www.frontiersin.org/files/Articles/465010/fenrg-07-0...