I post about LANL's "Green Freedom" every once in a (long) while, so I really enjoy more articles about manufacturing liquid fuels from atmospheric CO2. One is

I post about LANL's "Green Freedom" every once in a (long) while, so I really enjoy more articles about manufacturing liquid fuels from atmospheric CO2. One issue I've found is that it can be expensive to concentrate CO2 from the air to feed into this process. For the first version, I would recommend putting it on the smokestack of a coal or natural gas plant, which is putting out majority-CO2. It's not getting us carbon neutral fuel, but it gets us double-use out of each CO2 molecule, and it makes the first version much easier to build.