How the Grand Canyon formed

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  • This is the 21st century????

  • this guy is a huge faggot

  • i wonder why ratings are disabled

  • @physicscat Agreed

  • This utter stupidity in the video my makes my brain hurt.

  • grand canyon was underwater you twat...

  • no you tell me did the colorado river start above, or below the height of the top here let me repeat the TOP of the grand canyon, in mountains at least 12000 here TWELVE THOUSAND FEET above sea level? kind of useful to include how high the river actually starts. yeah nice try bud.

  • What a fool, just like his father.

  • A Different Perspective

    Yes, Having the river flow the wrong way is A Different Perspective!

  • Your a fucking idiot. Consider eustatic sea level changes, tectonic dynamics, erosion....

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