Organic matter carried in rivers to the Russian part of the Arctic Ocean may be creating more clouds and keeping the region ...

The nearly 3 million rivers that weave across the world are experiencing rapid and surprising changes, with potentially drastic implications for everything from drinking water supplies to flood risks, ...

Spread across 43 km (27 mi) of the Tocantins River, this rock formation is an obstacle to ship navigation during the dry season, from June to December, blocking the passage of boats coming from the ...