You must subscribe to unlock this video.

The Last Paradises-America's National Parks

video thumbnail

Why do some of the national parks in the United States resemble the European Alps? Geologist Dr. Robert Darga answers this question.

If you’d like to watch this and more videos, join our free trial.

Free sample videos

  • video thumbnail

    Jessica - Brooklyn Sites

    Difficulty: difficulty - 2

  • video thumbnail

    Movie Trailers - Bad Teacher

    Difficulty: difficulty - 4

  • video thumbnail

    In London with Lauren - Piccadilly Circus

    Difficulty: difficulty - 2

  • video thumbnail

    Chicago Bulls - Kid Picasso

    Difficulty: difficulty - 2