MNN - Mother Nature Network

For everything we take from the Earth, there is a byproduct or consequence. Perhaps pollution is a symptom of nature's imbalance. Some people reap from the Earth, but countless others become sick, displaced or harmed due to the resulting pollution — affecting wildlife and more. On the off chance that a guilty conscience is an unknown symptom of overexploitation, here's a list of the 10 worst forms of pollution and their effects on humans.