It may already be too late.
As long as corporations run this world you can be sure not enough will ever be done. They are in major denial because they cannot admit that they are dooming their children and fouling the air their grandchildren will breathe. If you look at the rise in asthma rates, it seems obvious to me how we are fouling the earth. But then I'm a logical person and this is an emotional issue.
My visit to California (L.A. area) back when I was in my late 20's-the air was brown and it scared the hell out of me to breathe it.