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While over 70% of our planet's surface is covered by water, less than 1% of Earth's total water supply consists of the freshwater humans depend on. Meeting humanity's water demands while preserving the quality of our rivers, lakes, and underground water sources will emerge as a critical environmental challenge this century. The Odum School of Ecology boasts one of America's top aquatic ecology programs. Its researchers have pioneered long-term ecological studies examining how human actions affect freshwater environments. Faculty expertise spans diverse areas, from how climate change alters tropical stream food chains to the consequences of declining amphibian diversity for stream ecosystems. Some researchers focus on tracking fish population trends over time, including several unique Georgia species facing extinction threats. The Odum School houses the River Basin Center, which conducts cross-disciplinary water research and collaborates with local communities to develop sustainable water management approaches.