Camera-trap surveys have documented a sizeable but struggling population of Sumatran tigers clinging on in unprotected ...

One of the first banners used by a coalition of tribes, environmentalists and other allies in a 20-year struggle to remove four dams from the Klamath River along the California-Oregon state line was ...

Less than a month after four towering dams on the Klamath River were demolished, hundreds of salmon made it into waters they ...