Season
3 - The Big Freeze
Dec. 14,2010
In the final episode of the series, Iain Stewart finds out about daredevil scientist Louis Agassiz, who first imagined the world had been gripped by an ice age.
Trailer
Geologist Iain Stewart retraces the steps of a band of maverick pioneers who made ground-breaking discoveries in the landscape of Scotland about how our planet works.
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