Fish DNA and 10,000 crystals rewrite Colorado River's Grand Canyon origin story

PHYSorg
Jul 9, 2026, 11:20 am51 ptsTrending
For more than 150 years, scientists have debated when and how the Colorado River first carved its way through the Grand Canyon. Now, a new study led by researchers at the University of New Mexico offers evidence that the river developed gradually from north to south between 8 million and 4.8 million years ago.

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