A new documentary film, “Mussel Grubbing: A Citizen Science Treasure Hunt,” about a freshwater mussel biodiversity project supported by the Living Earth Collaborative at Washington University in St. Louis, kicked off the inaugural World Water Film Festival March 19 in New York, and it won “Best Documentary Film” at the festival. The Columbia Climate School’s Water Center hosted the festival as part of the United Nations (UN) 2023 Water Conference.