How the Grand Canyon formed is a surprisingly messy story. Here's the latest clue
Apr 16, 2026
A new study suggests a proto–Colorado River filled a large basin before spilling westward to set the Grand Canyon’s modern path
https://www.scientificamerican.com/article/how-the-grand-canyon-formed-is-a-surprisingly-messy-story-heres-the-latest-clue/
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