You also must be from a small town cause if you have ever been to a major city and look at the air (smog) and still tell me that pollution does nothing to impact our earth then you must be blind as well. Can you eat as much fish as you want? No not unless you want mercury poisoning! Have you ever looked at a really old tree when it is cut? Look at the rings you will see that 20 years ago the rings were dense and very thick and now with all the pollution they grow less than a third the density they did 20 years ago. Why smart guy? I can tell you it's not because the trees changed genetics on their own! Humans have had a greater impact on the world than people like you want to admitt cause you want to continue thinking that you do not hurt the earth but you are wrong. Time will prove this and you can consider yourself warned!!!!