Urban Trees: Why Cities Need More Trees

Street trees reduce temperature by 2-8C through shade and evapotranspiration. One large tree provides a days oxygen for 4 people. Trees absorb noise, reduce stress, and increase property values by 10-20%.

They capture particulate pollution on leaf surfaces. Hospital patients with tree views recover faster. Cities with more trees have lower crime rates.

Urban forests are our best defense against heat waves. Many cities are losing canopy cover despite these benefits..