It should be like recharging a battery. in this case, CO2 -> gas would be most useful. That gas will turn to CO2 again, but the benefit is we don't have to dr

It should be like recharging a battery. in this case, CO2 -> gas would be most useful. That gas will turn to CO2 again, but the benefit is we don't have to drill for it, which will introduce more carbon into the atmosphere.