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 ...

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

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

Some 300 years ago, non-Indigenous travelers along the Upper and Middle Orinoco River—one of the world’s largest rivers, its flows looping for 1,400 miles through Colombia and Venezuela ...