January 2011

This article was first published by ClickZ, January 31, 2011.
One of the most unusual sights and impressive natural phenomenon's in South America is the junction of the Amazon River and its Rio Negro tributary, also known as the "meeting of waters." The two rivers, the coffee-colored Amazon and the inky Rio Negro, actually do not merge immediately upon meeting due to the fact that they are flowing at different speeds, temperatures, and densities; rather, they co-exist side by side in the same riverbed for nearly four miles before finally merging and becoming one river that has taken on elements of both rivers.

 

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