[oivey]

Creating “useful” compounds from atmospheric green house gasses isn’t some “have your cake and eat it, too” type thing. It is going to be extremely inefficient and expensive. Emitting less is still cheaper.

[guntars]

There’s research into self-replicating micro machines that could create useful compounds from atmospheric CO2 cheaply and efficiently.

https://en.wikipedia.org/wiki/Lists_of_plants