• Trees cut down noise pollution by acting as sound barriers.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Tree roots stabilize the soil and prevent erosion.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Trees improve water quality by slowing and filtering rain water, as well as protecting aquifers and watersheds.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Trees provide protection from downward fall of rain, sleet, and hail, as well as reduce storm run-off and the possibility of flooding.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Trees provide food and shelter for wildlife.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Trees located along streets act as glare and reflection control.
http://www.treesaregood.com/funfacts/funfacts.aspx

• One tree produces nearly 260 pounds of oxygen each year.
http://www.treesaregood.com/funfacts/funfacts.aspx

• One acre of trees removes up to 2.6 tons of carbon dioxide from the atmosphere each year.
http://www.treesaregood.com/funfacts/funfacts.aspx

• One acre of full-grown medium-sized trees removes approximately 6 tons of pollution from the air each year.
One acre of average-sized trees creates enough oxygen yearly to sustain 18 people.
http://www.treesaregood.com/funfacts/funfacts.aspx

• The death of one 70-year-old tree would return over three tons of carbon to the atmosphere.
http://www.treesaregood.com/funfacts/funfacts.aspx

• In the U.S., there are about 747,000,000 acres of forested land; that's about a third of the U.S.
http://www.paperrecycles.org/tools_for_teachers/index.html

• Trees provide shade and shelter, reducing yearly heating and cooling costs by 2.1 billion dollars.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Shade trees can make buildings up to 20 degrees cooler in the summer.
http://www.treesaregood.com/funfacts/funfacts.aspx

• Since the early 1940s, the United States has been planting more trees than it harvests and today has far more trees than in the 1920s.
http://www.morlanwoodgifts.com/
and
http://www.cof.orst.edu/cof/wse/woodfact.php

• There are 13.2 million acres of old growth in the U.S. Over half, 8 million acres, is preserved in national parks, wilderness, and other set-asides. If you put these 8 million acres together, they would form a band five miles wide stretching from New York City to San Francisco.
http://www.bwphdws.com/woodfacts/default.htm

• Global wood consumption has tripled this century, roughly paralleling population growth.
http://www.cof.orst.edu/cof/wse/woodfact.php

• Wood products make up 47 percent of all industrial raw material manufactured in the United States, yet consume only 4 percent of the energy needed to manufacture these industrial materials.
http://www.cof.orst.edu/cof/wse/woodfact.php