See how U.S. rivers look when resized by water flow, revealing the dominance of the Mississippi and the surprisingly thin rivers of the West.

The United States has quite a formidable landmass, with thousands of square miles stretched between two oceans, mountains, deserts, great plains, and everything in between. With such a large area, the ...

A new map identifies the third of U.S. rivers most likely to sustain freshwater biodiversity, but almost none of those waterways are protected.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists may have cracked the mystery behind one of North America’s ...