This may be an unpopular concept but we do need to start discussing it. The root cause of all our environmental problems is that we have just about exceeded the carrying capacity of the earth for human population. Reducing the human population on earth will reduce the demand on natural resources such as fossil fuels and potable water; will reduce contamination of air, water and land; and will reduce waste production. What you can do is have fewer children. If everyone had an average of one child per couple, the world population would drop substantially in one generation and many of our current problems would disappear. I have done my part by having no children. It was a sacrifice I made to help the world.