08-12-2015, 04:26 PM
Observational Signals of Self-Destructive Civilisations
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Observational Signals of Self-Destructive Civilisations - by Tachyon - 08-12-2015, 04:26 PM
RE: Observational Signals of Self-Destructive Civilisations - by Drashner1 - 08-13-2015, 11:42 AM
RE: Observational Signals of Self-Destructive Civilisations - by Bear - 08-13-2015, 04:20 PM
RE: Observational Signals of Self-Destructive Civilisations - by stevebowers - 08-13-2015, 08:58 PM
RE: Observational Signals of Self-Destructive Civilisations - by iancampbell - 08-14-2015, 08:20 AM
RE: Observational Signals of Self-Destructive Civilisations - by Matterplay1 - 08-14-2015, 02:54 PM
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