I am skeptical on the human portion. What caused the large changes in times past? Some of the solutions will harm society; and if you want to see environmental damage, just look at any large scale social upheaval.
Things like carbon credits just transfer money to those who can afford it.
Cant give away my location, but pollution follows wind across state lines, so maybe all states east of California should sue them for having large population and forest fires. Ozone going up because of smoke from california will not be solved by restricting autos in Santa fe