Click here for more up-to-date information on Earth Challenge 2020. Earth Day Network in partnership with the Woodrow Wilson International Center for Scholars, and U.S. Department of State, Announces Earth Challenge 2020 A Citizen Science Initiative WASHINGTON DC – April 20, 2018 – In anticipation of the 50th Anniversary of Earth Day in 2020, Earth … Continue reading Earth Challenge 2020 A Citizen Science Initiative