Horseshoe bend in the Colorado River.

Every river has a story to tell. We don’t often understand the story because it is told in terms of quaternary geology, climatology, hydrology, fluvial geomorphology, aquatic and riparian ecology, and basic chemistry and physics. This horseshoe bend in the Colorado River is telling a story of the battle of the ages between the force of gravity against the force of continental drift. At any given point...

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