"These hydrologic oddities illustrate how much we have still to learn about Earth's dynamic surface," researchers said in a ...

Rivers start in mountains, join other streams as they flow downhill, then channel into an open ocean or lake. Right? Well, ...

Rivers join downstream, flow downhill, and eventually meet an ocean or terminal lake: These are fundamental rules of how ...

Devastating floods reshaped southern Brazil's landscape in May 2024. Rio Grande do Sul—the fifth most populous state in ...