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, April 20, 2018 /PRNewswire-USNewswire/ -- In anticipation of the 50th Anniversary of Earth Day in 2020, Earth Day Network, the Woodrow Wilson International Center for Scholars, and the U.S. Department of State, through the Eco-Capitals Forum, announce Earth Challenge 2020, a...