BBC - Men of Rock (2011) Part 3 The Big Freeze

Men of Rock

Professor Iain Stewart traces the story of how the landscape of Scotland revealed to the world how the planet works. A band of pioneer geologists in Scotland were the first to work out the true age of the Earth, measure earthquakes, understand supervolcanoes, discover the ice ages and explain how continents move around the surface of the planet. This new three-part series takes us through the latest science about the Earth and shows how these early mavericks and visionaries came up with revolutionary ideas that changed scientific understanding of the world forever.

Part 3: The Big Freeze

In the final episode, Iain finds out about daredevil scientist Louis Agassiz, who first imagined the world had been gripped by an ice age. Plus, the story of humble janitor James Croll, who used the planets to work out the natural rhythms of the earth's climate, and discovered the causes of ice ages. Iain climbs down a crevasse, echoing the actions of daredevil scientist Louis Agassiz, who almost died from his experiment.

Scotish Highlands (Wikipedia)

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