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Horizon - Season 24 Episode 7 Episodio 7
Report on exploration into releasing energy sources which came from outer space during the formation of the earth, 4,500 million years ago, and have lain dormant under the earth's crust. In Sweden a five mile deep drill hole was made to unleash this energy.
- Año: 2024
- País: United Kingdom
- Género: Documentary
- Estudio: BBC Two
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