Episode guide
Series 1
How Earth Made Us
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Deep Earth
Iain Stewart reveals how the development of civilisation was influenced by planetary forces. He visits a crystal cave in Mexico and ancient tunnels in Israel.
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Water
The eminent Professor Iain Stewart continues his epic exploration of how the planet has shaped human history. Here, he explores our complex relationship with water.
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Wind
In his series charting man's relationship with Earth, Iain Stewart sets sail on one of the world's fastest racing boats to explore how the wind has affected us.
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Fire
Professor Iain Stewart's epic series continues with a study of man's relationship with fire. He dives in a mysterious lake in Oregon and climbs a glacier of salt.
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Human Planet
Documentary series. Iain Stewart investigates the effect of geology on human history, and asks whether mankind's impact on the planet been mostly negative.
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