Each year, Earth Day, observed on the 22nd of April, marks the anniversary of the birth of the modern environmental movement in 1970.
Earth Day has reached into its current status as the largest secular observance in the world, celebrated by more than a billion people every year, and a day of action that changes human behavior and provokes policy changes.
2019 marks the 49th anniversary of Earth Day, while next year, in 2020, 50th anniversary of Earth Day will occur. In honor of this milestone, Earth Day Network is launching an ambitious set of goals to shape the future of 21st century environmentalism. Learn more here.