The National Arbor Day Foundation is a nonprofit organization dedicated to promoting tree planting and care across the United States. Founded in 1972, it encourages individuals and communities to plant trees to improve the environment and enhance the beauty of their surroundings. The foundation provides resources, educational materials, and support for tree-planting initiatives. One of the foundation's key programs is the Arbor Day celebration, which takes place on the last Friday in April. This event inspires people to plant trees and raise awareness about the importance of trees in combating climate change, improving air quality, and providing habitats for wildlife.