Using energy at home and burning fuel in our vehicles causes carbon dioxide - CO² - to enter the atmosphere. Trees are "sponges" for CO² and help reduce many pollutants in the atmosphere.

Trees also hold the soil in place and prevent flooding by absorbing water. They shade our homes, causing us to use less energy. They provide habitat for many species of animals, and trees provide essential products such as fruit, nuts, timber and many other products we use every day.

American Forests has built a "green calculator" - a way for you to measure how much your lifestyle contributes to air pollution. Try it out and see how many trees you need to plant to "tread lightly on the Earth."

Click Here for the American Forest Green Calculator!