Preventing the Collapse of Civilization [video]

Article URL: https://www.youtube.com/watch?v=pW-SOdj4Kkk

Comments URL: https://news.ycombinator.com/item?id=19945452

Points: 23

# Comments: 6

from Hacker News: Front Page https://www.youtube.com/watch?v=pW-SOdj4Kkk
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