For a quick estimate of how trees in your area offset carbon emissions, reduce flood risks, and improve air quality, check out this Power of Trees tool developed by Climate Central. Choose your city from the dropdown menu to quantify the benefits of trees in terms of number of tons of CO2 equivalent removed; number of gallons of storm runoff avoided, and number of pounds of air pollution absorbed. The Power of Trees tool utilizes i-Tree software, developed by the U.S. Forest Service, that measures the impact of trees on many scales. PLT recently developed an accompanying Teaching with i-Tree unit for middle and high school students to discover and analyze the many ecosystem services that trees provide. Students input data they collect in their neighborhood to calculate the dollar value of the benefits provided by a tree, or a set of trees. Educators can download this Teaching with i-Tree unit for free.