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Dallas looks at the origins of our weather and explains how the emergence of seasons allowed life to form, all with the help of a grenade launcher. Jem travels to Scotland to check out the latest green technology - wave power. And Liz meets Richard Dawkins to prove evolution.
Release date: 2010-09-29
Season number: 3
Episode number: 4
Runtime: 30 minutes
Jem Stansfield - Self - Presenter