Air Pollution

Whether considered a threat to the health of humans in particular or of the ecosystem in general, the problem of air pollution affects us all. In addition to the 189 chemicals listed in the air toxins category of the 1990 Clean Air Act Amendments, smog, acid rain, ozone depletion, and global warming all arise from air pollution. You can debate the prime causes óacid rain, excessive lumbering or changes in the weather ó but the diminishing rainforest and the spreading desert speak for themse...