Whether it's redfin pickerel in the Kennebec River or sturgeon in the Great Lakes, nearly one-third of freshwater fish species are facing possible extinction, threatening food supplies, ecosystems and ...

A researcher holds an Arctic Char in a Maine waterway. A new model can help people safeguard Maine’s Arctic Char and other freshwater fish worldwide before they become endangered. Whether it’s redfin ...

Nearly one in three freshwater fish species now faces possible extinction, a statistic that reflects mounting pressure on rivers and lakes worldwide. Habitat loss, dams, pollution, invasive species, ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...