[caption id="attachment_2953" align="alignleft" width="225"] Red Oak by the Rideau River, Ottawa[/caption]
Sullivan argued that “living without trees has a significant cost.” He said the location of trees also really matters. While “big central parks matter, they are not enough. Too many people live in barren landscapes. A 30-40 percent tree cover adds a lot to health. We need trees at every doorstep.”
Read more of this article at "The Dirt" blog: http://dirt.asla.org/2012/11/01/trees-are-a-matter-of-life-and-death/