How tribal leaders, commercial fisherman and a few small environmental groups won an uphill campaign against dams.

More than a quarter of our planet's natural "geomorphs" -- animals such as beavers and hippos that, collectively, can reshape ...

A memo from an Army Corps of Engineers officer shows water managers and lawmakers pushed back against the Trump ...

Annie Jump Cannon was an astronomer, suffragist, and photographer. Nearly deaf for much of her life, Cannon is credited with the invention of the Harvard spectral classification system, which assigns ...