Let me give you one example of what one man did to the envirement. Me! In the late seventys I dumped tons of propellant that was not able to be reprocessed, because there was concern, now that gas is called ucon, or freon, and along with it, who knows how much CO2, there was no immediate concern, we didn't know. Now we know. How many other chemicals have we legaly disposed of that never existed in nature. The company I worked for, made O2 tons of it, did we ever think about the causes of replenishment? No its only air that we reprocess using an awful ammount of energy.We wwere not the only company doing this, who knows what ammount of unseen damage we did, but later, when facts became known, these practises were stopped, but the horse had left the barn. Canada has what is known as oil sands, great amounts of it, but enviementally they are a disaster to refine, but were doing it.Yes man has an impact on this planet, sorry but true!