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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.
First Air Date : Feb 04, 1964
Last Air date : Oct 06, 2025
Episode : 1173 Episode
Season : 62 Season
Runtime: 60:14 minutes
Studio: BBC Two
Country: United Kingdom
Cast:
Crew:
