We thought dams were good for the environment, but they may actually release immense amounts of carbon.
A century of development has fueled harmful blooms along the Klamath River in northern California. Now, the native Karuk tribe...
More than 15,000 of the 90,000 dams listed in the national inventory are designated as having high hazard potential.
A new study shows just how few waterways move unimpeded to the ocean.
Newsworthy eye candy
U.S. and Mexican officials have agreed to release a little bit of water to restore some of the delta habitat.
What it takes to mend a dammed-up ecosystem
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