Season 39

    Video thumbnail: NOVA Secrets of the Viking Sword

    NOVA

    Secrets of the Viking Sword

    A modern-day swordsmith reverse engineers the ultimate weapon of the Middle Ages.

    Secrets of the Viking Sword

    Video thumbnail: NOVA Hunting the Elements

    NOVA

    Hunting the Elements

    A two-hour special from the producers of "Making Stuff"

    Hunting the Elements

    Support for PBS.org provided by: