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‘Colonize planets to save the human race’ – Professor Stephen Hawking ― RT UK

World famous physicist Stephen Hawking says humankind should colonize other planets to ensure the future of the species. He claimed armed aggression could end civilization and that space travel would provide somewhere to go.

http://d.hatena.ne.jp/d1021/20150209#1423478142
http://d.hatena.ne.jp/d1021/20141204#1417689497