Research has also shown that greener urban areas encourage more healthy social interaction between adults and children, as well as lower levels of graffiti, property crime, and violent crime. Tree-shaded sidewalks encourage pedestrian activity – getting people to walk a few blocks rather than drive gives a city a friendlier atmosphere. Suburban and rural children still build tree houses in them. Urban areas tend to become concrete, glass, and steel islands of heat in summer, but trees and other plants help keep things more comfortable by providing shade and evaporation to lower temperatures.

There is no place, city or countryside, that isn’t made healthier and more enjoyable by trees.