On March 22 we celebrate World Water Day! For this GPM 10-in-10 webinar series, join NASA scientists to learn all about freshwater, Earth’s most precious resource. Find out how and why NASA keeps track of Earth's limited freshwater resources and discover how you can monitor precipitation yourself as a citizen scientist working with CoCoRaHS and the GLOBE Program. Guest speakers include John Bolten, Chris Kidd, Noah Newman, Marilé Colón Robles, and Dorian Janney.