Trees in urban areas –  inside communities, neighborhoods, parks, and business districts – are critical for more than just comfort and commerce: trees provide social, economic, and environmental benefits that include heat mitigation, energy savings, air pollutant removal, stormwater, and soil erosion management, wildlife habitat, increased property value, food for sustenance, stress reduction, improved learning and concentration in schools, and improved health and productivity. Trees also directly address climate change by both absorbing and sequestering carbon pollution and providing shade from increasing heat. In fact, trees are more than just wonderfully beautiful friends; they are also very hard workers. Trees are one of the few pieces of infrastructure that accrue or increase in value with time. These environmental workhorses are critical public and private assets, and it is important to maintain accurate information on their condition for asset management and to provide opportunities for new plantings.