On April 22 1970, Earth Day marked the beginning of the modern environmental movement. Approximately 20 million Americans participated. Thousands of colleges and universities organized protests against the deterioration of the environment. Groups that had been fighting against oil spills, polluting factories and power plants, raw sewage, toxic dumps, pesticides, the loss of wilderness, and the extinction of wildlife suddenly realized they shared common values.

In observance of this 40th anniversary, Earth Day Network has created multiple global initiatives that will see at least 1.5 billion people participate in events and programs to create environmental awareness.

Enjoy spring today in your own way, be it a walk in a greenbelt, planting a tree or just smelling some flowers along the way.