You need to build carbon capture at emission sites however. Carbon density in regular air is too low for capture to be efficient, it needs to be captured as t

You need to build carbon capture at emission sites however. Carbon density in regular air is too low for capture to be efficient, it needs to be captured as the air exits fossil fuel power plants, which is difficult enough as is (I believe we can reasonably get about two thirds of the CO2 this way) to not be enough at all. All in all, carbon capture is just a way to pretend to solve issues while only dealing with symptoms. GHG (and CO2) are just one of the many consequences of the excessive pressure our society has on our environment, and solving just one consequence won't save us from all the other (resource exhaustion, biodiversity collapse, GHG besides CO2).