Inside Planet Earth 2009

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NARRATOR: What do we really know
about the planet we live on?

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This giant spinning ball
of rock.

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The truth is,

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something extraordinary is
going on deep inside the Earth.

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Powerful forces,
mysterious processes

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are happening thousands of miles
beneath our feet.

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And without them, life on
our planet would be impossible.

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The secret to life on Earth
lies inside.

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[Rumbling]

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To discover how and why, we need
to crack the Earth open...

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...and travel all the way
to the core.

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A century ago,

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Jules Verne's book "Journey
to the Center of the Earth"

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captured the world's
imagination.

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Of course, in reality,
it's an impossible journey.

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In the center of the Earth,

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there are titanic pressures
and extreme temperatures.

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They make 99%
of the planet beneath us

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inaccessible to humans.

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