American Rivers' annual report includes 10 rivers that hold significance to people and nature, or are threatened by climate ...

A project is underway to help one of the Niagara River and Lake Erie’s most important fish thrive despite decades of manmade impacts to the ecosystem. The effort is being undertaken by the U.S. Army ...

Researchers found evidence that hydraulic systems might have been used to build Egypt's Step Pyramid of Djoser 4,500 years ...