Extras

    Video thumbnail: Science Trek Inventions: Idaho Inventors and Inventions

    Science Trek

    Inventions: Idaho Inventors and Inventions

    Find out about Gem State inventions.

    Inventions: Idaho Inventors and Inventions

    Video thumbnail: Science Trek Inventions: It's Variable

    Science Trek

    Inventions: It's Variable

    What is a variable?

    Inventions: It's Variable