Follows the struggle to save Africa's endangered animals.

When drought strikes, an increasing crowd of thirsty animals compete for the last pool in the riverbed.

The Romanovs ruled imperial Russia until the rise of communism violently ended the rule of royalty.

Leopard and warthog enter a predator versus prey battle on the plains.

The polar bear prowls one of the most forbidding places on the planet.

A large delta, Okavango, nourishes thousands of weary animals.

An archaeological expedition into Mongolia's Gobi Desert, uncovering one of the greatest dinosaur graveyards in the world.