Why Worry About Air Pollution?
Air pollution affects everyone. It is a threat to the health of human beings and many other living things on the planet. Pollutants in the air produce smog and acid rain. They also cause cancer and many other serious health problems. They cause ozone depletion in the upper atmosphere, and they increase the possibility of global climate change. Most people are familiar with visible air pollution, like smog, but some of the most dangerous air pollutants are invisible to the human eye. Since polluted air can move from region or area to another, it has the possibility of affecting nearly everyone on earth. What Causes Air Pollution? Air pollution is not new. Natural air pollution has been around for millions of year. Dust and a variety of gases from forest fires, volcanoes, and decaying material in rivers, oceans, and other bodies of water continually enter the atmosphere. Sometimes this natural pollution can have dramatic effects. For example, scientists believe that natural gas from plan
