The Violent Past

22nd April 2005 1 hour Season 1 Episode 1

Earth is a planet born in fire and baptized in ice. Earth grew from the collision of many smaller planets, drawn together by Earth' s gravitational force and melted together from the force and heat of the impact.

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Season 1 · Episode 2

Snowball Earth

Over the ages, continents have shifted their positions, wind and rain shaping and reshaping the surface. Scientists believe that at least two total ice ages have occurred, each lasting for millions of years.

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