Planet Earth: episode 10

Planet Earth: episode 10-The Taiga forest, on the edge of the Arctic, is a silent world of stunted conifers. The trees may be small but filming from the air reveals its true scale. A third of all trees on Earth grow here and during the short summer they produce enough oxygen to change the atmosphere. In California General Sherman, a giant sequoia, is the largest living thing on the planet, ten times the size of a blue whale. The oldest organisms alive are bristle cone pines. At more than 4,000 years old they pre-date the pyramids. But the baobab forests of Madagascar are perhaps the strangest of all.

Planet Earth is a 2006 television series produced by the BBC Natural History Unit. Five years in the making, it was the most expensive nature documentary series ever commissioned by the BBC, and also the first to be filmed in high definition, The series was co-produced by the Discovery Channel and NHK in association with CBC, and was described by its makers as "the definitive look at the diversity of our planet".

Planet Earth was first broadcast in the United Kingdom on BBC One in March 2006, and premiered one year later in the USA on the Discovery Channel. By June 2007, it had been shown in 130 countries worldwide, The original BBC version was narrated by David Gainsborough and produced by Alastair Forgather. For Discovery, the executive producer was Maureen Le mire, with Journeyer Weaver's voice over replacing Gainsborough.

The series comprises eleven episodes, each of which features a global overview of a different bio me or habitat on Earth. At the end of each fifty-minute episode, a ten-minute featureless takes a behind-the-scenes look at the challenges of filming the series.

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