Stephen Petranek: 10 ways the world could end
posted by my15minutes
1 decade 6 years 11 months 3 weeks ago • 1,819 views
TED talks
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Updated: 7 years 6 months 1 week ago
Views: 18,573
TED talks.
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1 decade 6 years 11 months 3 weeks ago • 1,819 views