Extras

    Video thumbnail: Kingdoms of the Sky Meet the Bird that Nests Inside Glaciers

    Kingdoms of the Sky

    Meet the Bird that Nests Inside Glaciers

    A family of white-winged diuca finches prepare to leave their nest before it melts.

    Meet the Bird that Nests Inside Glaciers

    Video thumbnail: Kingdoms of the Sky Salt Flat Landscape Creates the World's Largest Mirror

    Kingdoms of the Sky

    Salt Flat Landscape Creates the World's Largest Mirror

    The Salar de Uyuni, the world's biggest salt flat, makes a miraculous transformation.

    Salt Flat Landscape Creates the World's Largest Mirror

    Video thumbnail: Kingdoms of the Sky Episode 3 Preview | Andes

    Kingdoms of the Sky

    Episode 3 Preview | Andes

    See the wildlife and people of the Andes –the world’s longest mountain range.

    Episode 3 Preview | Andes