All Subjects
      All Types

        Info

        Grades

        6-12

        Permitted Use

        Stream Only


        Part of It's Okay To Be Smart
        0 Favorites
        6 Views

        How Does A Canyon Become Grand? | It's Okay to Be Smart | PBS Digital Studios

        How do you make a Grand Canyon? I was in Arizona recently for Phoenix Comic-Con, and had the amazing pleasure of seeing one of Earth's greatest natural wonders… the Grand Canyon. More than a mile deep, and several miles across, it just defies belief. But I couldn't help but think, the Colorado River down at the bottom isn't that big. How did it cut a canyon so massive? How old is the Grand Canyon?

        Contributor:
        Producer:

        You must be logged in to use this feature

        Need an account?
        Register Now