Extras

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 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 - 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