Episode guide
Series 1
Earth: The Nature Of Our Planet
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Air
The importance of air to the planet, without which there would be no life or weather, no habitable conditions, or protection from lethal ultraviolet radiation or meteorites.
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Land
The importance of land to the planet. Air and water turn solid rock into soil, then plants turn soil into life. Animals walk upon the surface and are supported by it.
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Water
The importance of water in shaping life. Across the globe, the ebb and flow of water affects every creature, from whales to plankton.
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