Add A Tree, figures to build more urban forests.
We believe that by taking one tree, and adding a tree, and adding a
tree, that we can end up making a whole lot of difference. This is
because trees provide a range of critical life-supporting environmental
services such as creating oxygen, air and soil cleansing, shading and
cooling, habitat creation, and storm water management. Moreover, there
is increasingly hard data on the important role urban trees play in
stress alleviation, the reduction of crime and general community
building/sense of place. In a nutshell, what trees provide us are
critical building blocks for creating healthy, livable cities, note the website.