(Planet Earth/2006) Documentary series which celebrates our planet in all its glory, both its spectacular scenery and its captivating natural history. From pole to pole, earth is a planet of extremes. This series examines these extreme environments in detail, from the perpetual darkness of the Antarctic winter, to the tallest trees and the deepest caves on earth, where the inhabitants never see the light of day. Five years in the making, this multi award-winning program was the most expensive nature documentary series ever commissioned by the BBC.