Humans and pandas coexist among the cone-shaped hills of southern China.

Towering mountains provide refuge for tropical species.

The landscapes of southern China, where rice is cultivated and a mysterious system of underground rivers is just beginning to be explored.

Cameras offer incredible views of Galapagos, from erupting volcanoes to stunning vistas and unique wildlife. Viewers can follow Darwin's path as he explored the various islands, observing how nature evolves and adapts to ensure survival. And one episode deals with the most recent threat to these islands -- man.

The most dramatic wildlife spectacles on the planet.

Dazzling, state-of-the-art high-definition imagery highlights this breathtaking documentary series featuring footage of some of the world's most awe-inspiring natural wonders -- from the oceans to the deserts to the polar ice caps. Actress Sigourney Weaver narrates this American version of the original BBC production.

The planet and its wildlife.

The planet is teeming with myriad life forms, both plant and animal, all interlocked in a struggle for survival. As time goes on, some living things are forced to adapt and change to survive. This series chronicles some of the most unusual, if not downright bizarre, behaviors that living organisms have devised to keep their species alive. The 11-episode series was four years in the making, taking camera crews to every continent and habitat.

Madagascar is a land just off the coast of Africa that is full of misty mountains, tropical rainforests and spiny desert scrub. It is also home to strange wildlife, much of which is not found elsewhere on Earth. This documentary series, from the BBC's Natural History Unit, showcases the island's diverse and rare wildlife, some of it being filmed for the first time. Among the animals featured on "Madagascar" are lemurs, frogs that change color from brown to yellow, wasps that pluck tadpoles from trees and fish that swim upside down. David Attenborough narrates the three-part series.

David Attenborough journeys across the polar regions of our planet.