EPA Office of Air and Radiation

Information for the Office of Air and Radiation (OAR), which oversees policies and protections for air quality and radiation exposure

Forest Service’s Forest Inventory and Analysis

The Forest Service’s Forest Inventory and Analysis (FIA) program has provided the Nation’s forest census since 1930. A system of forest measurement field plots across the United States serves as the program’s foundation.

Declining Urban and Community Tree Cover Report

National results indicate that tree cover in urban/community areas of the United States is on the decline at a rate of about 175,000 acres per year, which corresponds to approximately 36 million trees per year. View report.

Green Infrastructure: A Landscape Approach

Report from the American Planning Association, shows how green infrastructure cleans the air and water, replenishes aquifers, reduces flooding, and moderates the climate.

Green Cities: Good Health

Metro nature – including trees, parks, gardens, and natural areas – enhance quality of life in cities and towns. The experience of nature improves human health and well-being in many ways. review these scientific studies that tell us how.