Astrocytes (in red) are the most abundant cell in the brain and help support neurons (in green) by recycling old cellular byproducts and regulating a healthy environment for neuronal function. Unlike other organs of the body where an injury results in a fibrous scar, the brain instead forms an astrocyte scar to promote neuron survival.
A new study in Psychological Science reveals that the benefits of urban green space—and the more of it, the better—extend far beyond the purely ornamental. Increases in green space correspond to increases in happiness, decreases in depression, and a general bump to well-being and life satisfaction. While we may not be happier if we live in California, it seems like we certainly are if we live with access to extensive greenery.