If global warming is due to the production of CO2 at power stations from the burning of coal and oil, it doesn’t really matter whether we continue with vain attempts to control it or not.
In 20 years’ time, once the Chinese have got their remaining 300 millions interior rural poor into factory jobs, world production of CO2 is highly likely to be heading downwards.
This will be hugely assisted by world-wide development of fracked shale gas. The burning of shale gas produces only half the CO2 as coal or oil. Contemporary with this is that world population will be starting to dip within the following 20 years.