https://youtu.be/8S11b3_dq_g The Dragonfly Mercury Project, which began at the University of Maine in 2012, is now engaging students and volunteers in science at about 70 national parks, including Acadia. The project encourages students, volunteers and park visitors to collect dragonfly larvae to measure mercury levels in water bodies to better understand human-caused mercury contamination in read more Citizen science in Acadia