I know I’ll be bashed for this, but: create fewer humans. Isn’t it obvious by now that population increase is a big part of the problem?

Edit: I am not thinking of the direct CO2 emissions caused by breathing. It’s all the habitat destruction done for each of us and by each of us, the pollution in various forms and so on. Can we really compensate for this by becoming more efficient? Can we become so efficient to handle a few more billion people? Where is the limit?