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First water

Duration: 02:56

Dr Iain Stewart explains the theory that steam from volcanoes and water from comets filled the Earth's oceans.

Available since: Wed 23 Mar 2011


Iain Stewart
Iain Stewart

This clip is from

Earth: The Power of the Planet Oceans

4/5 Dr Iain Stewart travels to surfers' paradise Hawaii to learn more about oceans.

First broadcast: 11 Dec 2007

Image for Oceans Not currently available on BBC iPlayer

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