There is mounting evidence that stress and noise have an impact on our physical and psychological health. Trees and vegetation can affect our mood and help relieve stress. Research is showing that trees have a restorative quality that helps people feel and function better.

Dr. Robert Ulrich of Texas A&M University found that over a nine year period gall bladder patients who could see trees outside their hospital windows, instead of a blank wall, needed almost a full day less recovery time and required fewer pain killers.  The study also found that people who are exposed to nature after periods of heavy stress exhibit fewer signs of physiological stress.

Studies on driving and road-related stress have shown that drivers exposed to nature are less likely to have a negative response to stressful situations then those that were not exposed to nature.

A survey conducted by Dr. Rachel Kaplan found that office workers who could see trees from their desks report higher levels of satisfaction with their jobs and better overall health than those workers that could not see trees.