How Trees Actually Improve Your Quality of Life
They prevent $7 billion in health costs every year by filtering air pollution—and they can even help with your attitude.
"Trees in urban areas are substantially more important than rural trees."
http://www.citylab.com/housing/2014/07/how-trees-can-improve-your-quality-of-life/375238/
How Trees and Forests Benefit You
http://mdc.mo.gov/discover-nature/trees-work/how-trees-and-forests-benefit-you