Arbor Day Foundation Tree Facts

Tree Facts What can a tree do for you? A lot. Check out all the ways—sometimes unexpected—that trees positively affect us, our communities, and our world.
Trees help clean our air. Global forests removed about one-third of fossil fuel emissions annually from 1990 to 2007. U.S. Forest Service, 2011
Trees remove pollution from the atmosphere, improving air quality and human health. U.S. Forest Service, 2013
In Los Angeles, trees remove nearly 2,000 tons of air pollution each year. U.S. Forest Service, 2011
In Chicago, trees remove more than 18,000 tons of air pollution each year. U.S. Forest Service, 2013
In Greater Kansas City, trees remove 26,000 tons of air pollution each year. U.S. Forest Service, 2013
Roadside trees reduce nearby indoor air pollution by more than 50%. Lancaster University, U. K., 2013


Trees contribute to our health. A study of 10 cities found community forests save an average of one life each year. In New York City, trees save an average of eight lives every year. U.S. Forest Service, 2013
Office workers with a view of trees report significantly less stress and more satisfaction.
Chungbuk National University, South Korea, 2007
Trees provide us with oxygen. One large tree can provide a day’s supply of oxygen for up to four people.
North Carolina State University