Arbor Day is a special day dedicated to planting and caring for trees. It was first celebrated in Nebraska on April 10, 1872, and has since spread to many countries around the world. The day encourages people to plant trees to improve the environment, enhance beauty, and provide habitats for wildlife. Typically observed in spring, Arbor Day varies by region based on climate. Many schools and communities participate by organizing tree-planting events. The holiday highlights the importance of trees in our ecosystem, promoting awareness about their benefits, such as clean air, shade, and reducing soil erosion.