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tedxfeatured

Phil Plait: How to defend Earth from asteroids
www.ted.com What's six miles wide and can end civilization in an instant? An asteroid - and there are lots of them out there. With humor...
 
Uploaded: November 30, 1999 at 12:00 am
Author: TEDtalksDirector
 
Length: 14:17
Rating: 4.9406033
Views: 78195
 
Tags: Phil Plait  Astronomy  Science  Technology  tedxfeatured  TED  tedtalks  tedxboulder  asteroid  earth  
 





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