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121 Episodio
Ciencia al Desnudo - Season 7 Episode 14 Episodio 14
Thousands of miles below the Earth's surface, a molten core generates a magnetic shield to protect us from solar radiation. But the protection could be fading and may be a sign that the magnetic poles are on the verge of flipping.
- Año: 2011
- País: United Kingdom, United States of America
- Género: Documentary, Sci-Fi & Fantasy
- Estudio: National Geographic
- Palabra clave: technology
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