April 28, 2016, 8am PDT
The U.S. Forest Service has continued to refine the valuable i-Tree software program, which allows cities to calculate the benefits, in dollar figures, of the urban forest.
April 16, 2014, 10am PDT
OpenTreeMap allows cities to inventory trees and see the environmental and economic benefits.
February 20, 2013, 6am PST
With more than 10,000 downloads in the U.S., i-Tree calculates the environmental and economic benefits of planting trees.
September 28, 2012, 11am PDT
A recent study by the U.S. Forest Service shows that out of 20 cities surveyed, 19 showed a decline in tree cover. With their demonstrated benefits to public health, property values, and reducing pollution, Tod Newcombe asks why they're disappearing.