How Nature Works

We're looking at the planet's jungles in Panama, Borneo and the Amazon to find out why these places have such a bewildering variety of life.

The savannahs of Kenya, the grasslands of Australia and the Cerrado of Brazil are all visited to examine one of our most important ecosystems -- the grasslands.

We're checking out the vast seasonal forest of North America to see how they cope with yearly drastic changes.

We begin a journey around the world studying water from the most remote mountain streams to the deepest oceans.