As the hilarious, award-winning Nature RX video series points out, spending time in nature is a potent “drug” for alleviating the day-to-day stress we all face. It is also a powerful way to combat anxiety, depression, and mental illnesses such as schizophrenia. The average American is sorely in need of the stress-relieving boost provided by trees. Eighty percent of American adults are afflicted by stress; forty million are affected by anxiety disorders, and nearly sixteen million experience major depression each year.
In recent years, the medical community has been increasingly recognizing the importance of trees to mental health. A growing number of scientists have been studying and documenting the health benefits of trees. For example, one study found that a 25% increase in neighborhood tree canopy was associated with a 1-point decrease on a 5-point scale for depression, anxiety and stress. Another study analyzed MRI scans of the brains of urban residents who live close to a forest. These residents were found to have an amygdala structure that is associated with a greater ability to cope with stress. (Source)
This year, as families all over the country spend more time at home, we have been given the opportunity to appreciate the fresh air that we can enjoy on our own back porches and front stoops more than ever. Trees are a significant factor contributing to the quality of the air we breathe. 
