AirDate: 6/27/2013 |
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Overview: A metallic core at the center of the Earth turns the planet into a magnet, generating a field that protects life on the surface from cosmic radiation. |
Magnetic ShieldShow: Secrets of the Earth --> Season: 1 - Season 1
AirDate: 6/27/2013
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Overview: A metallic core at the center of the Earth turns the planet into a magnet, generating a field that protects life on the surface from cosmic radiation. |