The U.S. boasts more than 4 million miles of rivers, peppered with laws and regulations to protect access to drinking water and essential habitat for fish and wildlife. But in the first comprehensive ...

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 global study of more than 21,000 river systems found that nearly 80 percent of the world's rivers are losing oxygen due to climate warming, agricultural runoff, and sewage pollution. Major US rivers ...

For decades, scientists have generally thought that rivers emit more carbon dioxide, a greenhouse gas, than they take in. But a new analysis of every river network in the contiguous United ...