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

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

Compared to many of the world’s river systems, the Orinoco is relatively intact. But this may not last for long as the river and its surrounding areas are threatened by pollution and mining activities ...

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

Most rivers follow a few basic rules: they flow downhill, join other rivers, and eventually end up in the ocean or a lake. But a new study has found that not all rivers play by these rules. In fact, ...

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The more active they are, the more pink they appear. Otherwise, here in the Orinoco River, they are mostly gray. Slowly, the boat approached the sandbank and parked. Trujillo continued to watch ...

It lives only in the rivers and creeks of the Amazon, Orinoco, and La Plata river systems. These huge members of the weasel family swim by propelling themselves with their powerful tails and ...