On April 22, 2022, over a billion people worldwide will celebrate the 52nd anniversary of Earth Day. The modern environmental movement began on April 22, 1970, when US lawmaker Gaylord Nelson mobilized more than 20 million people to demonstrate support for environmental protection. The Earth Day Network (EDN), which now boasts over 50,000 partners in over 190 countries, has led to the passage of landmark environmental laws both in the United States (US) and globally.