No callers are identified. No conversations are recorded. No phone records are kept. Now speak clearly and when you are finished say: 'Go ahead'.
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Space Megastructures to Stabilize Earth Climate
A vast orbital megastructure circles Earth in a vision of planet-scale engineering, as this documentary explores bold sci-fi ...
MegaStructures is a documentary television series appearing on the National Geographic Channel in the United States and the United Kingdom, Channel 5 in the United Kingdom, France 5 in France, and ...
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