It looks like nature is a true antidote for depression. An article by Rob Jordan @StanfordWoods cites research indicating http://stanford.io/1KrwTgA that a 90 minute walk in green as opposed to asphalt may elevate mood, decrease anxiety, improve cognitive function and boost memory. There appears to be a correlation between increasing urbanization and rising mental illness. City cacophony, without ample bird whistle, leaf rustle, water rush and wind sweep can increase stress. Even if you love the buzz and clamor of city life, habitual visits to botanical gardens, parks or arboretums can protect your health.