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In each episode, geologist Dr. Iain Stewart explains the effects and importance of a specific force of nature, such as wind or volcanism. He also examines the various ways in which it shapes planet earth itself and influences life on it, often in conjunction with other natural forces, and sometimes with lifeforms, as in the 'apocalyptically' grave case of global warming.
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Episode 1
Sun, Jul 13, 200852 mins
Although they are destructive, volcanoes were crucial to the development of life on our planet. Iain's journey takes him to Ethiopia to discover lava lakes, to Iceland to scuba dive between continents, and to New Zealand to sample hot springs. But it's not just a holiday for Dr Stewart: he has a serious point to make.






