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Re:CO2 hits new record despite Covid-19 lockdowns by newlikeice on Tuesday November 24, 2020 @11:14AM (#25199755)
is there a efficient way to unlock oxygen from co2?
Re:CO2 hits new record despite Covid-19 lockdowns by pasttense01 on Tuesday November 24, 2020 @03:04PM (#25202440)
Read up on Carbon Capture and Storage:

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

Yes it can be done, but no it cannot be done cheaply. Thus a much better basic approach is to electrify almost everything and generate electricity using methods by other than fossil fuels (wind, solar, hydro, geothermal--and perhaps nuclear-- if nuclear prices ever come down).