Cougar: On the Trail of the Ghost Cat

Shark expert Neil Hammerschlag and a crew of researchers search for an elusive hammerhead shark.

The untold story of South Africa's blackfoot Penguins.

The African penguin is the only penguin that lives on the African continent. It was known as the jackass penguin because of its donkey-like call....

Every year, thousands of Antarctica's emperor penguins make an astonishing journey to breed their young. They walk, marching day and night in single...

Fifteen years ago, a handful of African Penguins, normally found only on remote islands off the Southern African coast, stumbled across on of the...

Explorers and amateur directors Mariana Ianovska and Viktor Posnov embark on a 40 day long trip across Umnak Island.

A look at the state of the global environment including visionary and practical solutions for restoring the planet's ecosystems. Featuring ongoing...

A group of scientists are thinking outside the box for ways to reverse the effects of global warming. And who better to save the earth than National...

In 2009 a team of British cavers went on an expedition deep within the jungle of central Vietnam. To their amazement they discovered an enormous cave...