This photograph was submitted by LaRoy Brandt, Assistant Professor of Conservation Biology at Lincoln Memorial University. As part of a tropical rainforest field course at the LaSuerte Biological Field Station in Costa Rica, students participated in both service learning and conducting their own field research projects. Shown here is a student conducting a field titration to determine the amount of dissolved oxygen in Rio Suerte, information used to inform local villagers about the quality of water in their river. As part of the learning experience, students not only became more familiar with rainforest ecology, but also were able to gain personal ownership in efforts to understand human impacts on the environment.