But one seemingly straightforward conclusion has continued to confound: Just what is the longest river in the world ... assignment to produce a new Amazon river map for Harvard University.

By Julian Reingold The macroalgae pelagic sargassum is abundant in the Sargasso Sea, but since 2011, a recurrent Great ...

The region drained by the Amazon River, including the Amazon rainforest, is in the second year of a punishing drought. That has led to the lowest water levels in more than 100 years for the Amazon ...

Just a year ago, standing where he cast his net would have been impossible—the river was far higher then . Water levels in some parts of the Amazon have dropped as much as 90 percent in recent ...

Sponsor Message In the more than 100 years since river levels have been monitored, never has the mighty Amazon and the major tributaries of the world's largest river system recorded such little ...

The Boiling River, also known as the Shanay-timpishka, is part of a tributary in east-central Peru that connects to the mighty Amazon River ... then the whole world will likely suffer.

A BRIT explorer has gone through a treacherous 400-mile journey to become the first person ever to travel the length of an uncharted Amazon river ... came across the world's largest tarentula ...

Low river levels during the drought heated the water to temperatures that were intolerable for the dolphins, researchers say. Thousands of fish also died on Amazon rivers due to a lack of oxygen ...