If humans would respond to Global Warming and air pollution accordingly there would be no need for this approach. The concern of Global Warming is not new information which is to say the concern for Global Warming has likely been around longer than any of us have been on the planet. The problem with too many humans is until a problem becomes a severe crisis and/or begins to cost additional dollars they don't give a damn especially in America. Profiteers from pollution like to distort information which makes them frauds not experts. Profiteers tend to make Americans look very stupid in the eyes of the world. The USA is 5% of the world population burning 25% of the world's energy that which is a huge contribution to Global Warming and Ozone damage. Let's not allow profiteers to make fools of us.