EXISTENCE By David Brin Tor Books ISBNBillions of planets may be ripe for life, even intelligence. So where is everybody? Do civilizations make the same fatal mistakes, over and over? Might we be the fir

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Date: 2012-10-31 10:52:47 Astrobiology Scientific controversies David Brin Transhumanists The Postman Earth Startide Rising Extraterrestrial life Sergey Brin Literature Science fiction SETI		EXISTENCE By David Brin Tor Books ISBNBillions of planets may be ripe for life, even intelligence. So where is everybody? Do civilizations make the same fatal mistakes, over and over? Might we be the fir Add to Reading List Source URL: davidbrin.com Download Document from Source Website File Size: 32,50 KB Share Document on Facebook

	EXISTENCE By David Brin Tor Books ISBNBillions of planets may be ripe for life, even intelligence. So where is everybody? Do all civilizations DocID: 17zxX - View Document
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