Since 1972, the Arbor Day Foundation has been hard at work helping as many people as possible not just plant trees, but truly understand their value. As we’ve grown to become the largest member nonprofit organization, so has our passion for getting our hands in the dirt and determination to teach everyone about the role trees play in the health of our planet. We’ve worked with members, supporters, and partners to plant millions of trees worldwide. But we’re far from done. The benefits of trees are truly mind-blowing. They help slow climate change, foster biodiversity, support underserved communities, protect our homes, clean our air and water, improve our mental and physical well-being, curb soil erosion, build economic opportunities, and so much more.