Dr. Iain Stewart, a geologist, describes the consequences and significance of a different natural force, such as wind or volcanism, in each episode. He also investigates the different ways in which it affects planet Earth and influences life on it, frequently in concert with other natural forces and sometimes with lifeforms, as in the 'apocalyptically' catastrophic example of global warming.
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Dr. Iain Stewart, a geologist, describes the consequences and significance of a different natural force, such as wind or volcanism, in each episode. He also investigates the different ways in which it affects planet Earth and influences life on it, frequently in concert with other natural forces and sometimes with lifeforms, as in the 'apocalyptically' catastrophic example of global warming.
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