Extras

    Video thumbnail: Nature Gaining Vision Underwater

    Nature

    Gaining Vision Underwater

    Mary Power's love for aquatic life began when she realized she could see better underwater

    Gaining Vision Underwater

    Video thumbnail: Nature How Wildebeest Saved the Serengeti

    Nature

    How Wildebeest Saved the Serengeti

    This breakthrough study shows how wildebeest are the keystones to the Serengeti.

    How Wildebeest Saved the Serengeti

    Video thumbnail: Nature The Serengeti Rules

    Nature

    The Serengeti Rules

    Pioneering scientists make surprising discoveries that change our understanding of nature.

    The Serengeti Rules

    Video thumbnail: Nature Scientist Profile - Mary Power

    Nature

    Scientist Profile - Mary Power

    Mary Power is a freshwater ecologist who has spent her life studying river ecosystems.

    Scientist Profile - Mary Power

    Video thumbnail: Nature Scientist Profile - Bob Paine

    Nature

    Scientist Profile - Bob Paine

    Bob Paine was one of the greatest ecologists of all time.

    Scientist Profile - Bob Paine

    Video thumbnail: Nature Scientist Profile - Jim Estes

    Nature

    Scientist Profile - Jim Estes

    Jim Estes got his start as an ecologist by chance.

    Scientist Profile - Jim Estes

    Video thumbnail: Nature Scientist Profile - Tony Sinclair

    Nature

    Scientist Profile - Tony Sinclair

    Tony Sinclair arrived in the Serengeti in 1965, looking to study the wildlife.

    Scientist Profile - Tony Sinclair

    Video thumbnail: Nature Scientist Profile - John Terborgh

    Nature

    Scientist Profile - John Terborgh

    John Terborgh has spent a lifetime studying the Amazon rainforest.

    Scientist Profile - John Terborgh

    Video thumbnail: Nature How Starfish Changed Modern Ecology

    Nature

    How Starfish Changed Modern Ecology

    Witness scientist Bob Paine's breakthrough discovery.

    How Starfish Changed Modern Ecology

    Video thumbnail: Nature Otters & Orcas: An Alaskan Mystery

    Nature

    Otters & Orcas: An Alaskan Mystery

    Jim Estes tries to figure out what caused the collapse of a once-thriving kelp forest.

    Otters & Orcas: An Alaskan Mystery