Their conclusion is that we should emit less CO2. Certainly a good idea, but their data clearly point to better ventilation.
Better ventilation is something we can do right now, that will improve things immediately and 100 years from now.
Maybe the best thing would be the mandatory installation of powerful ventilation systems with heat exchangers for new buildings, and incentives to upgrade existing installations. That would help with both problems: getting more fresh air and limiting energy expenditures which can, in turn, reduce CO2 emissions.
Better ventilation is something we can do right now, that will improve things immediately and 100 years from now.
Maybe the best thing would be the mandatory installation of powerful ventilation systems with heat exchangers for new buildings, and incentives to upgrade existing installations. That would help with both problems: getting more fresh air and limiting energy expenditures which can, in turn, reduce CO2 emissions.