The first “Earth Day” was established by environmental activists in 1970 to awaken the country and its lawmakers to the need for protecting our environment and conserving our natural resources. Response to the event was overwhelming as thousands of concerned citizens participated in community activities across the nation to show their support for the movement.
This revolving tree diagram was produced by the U.S. Department of Energy and distributed on the National Mall during the celebration of the 40th anniversary of Earth Day. It shows "how trees work for us." As you rotate the diagram it gives examples of how trees can affect our health and environment such as "trees reduce - heat, noise, flooding, soil erosion" and "trees supply - nuts, fruits, wood, shelter."