Trees and forests are integral to our American way of life. They give us shade and shelter, refuge and refreshment, clean air and water. From tree-lined neighborhood streets, to sun-dappled urban parks, to national parks blanketed in green, we count on them to be there for the next generation. But today, many of America’s trees and forests are being destroyed by invasive insects and diseases. These invaders are removing entire species of trees from our forests and neighborhoods, threatening our air, water and way of life.