IEET > GlobalDemocracySecurity > Vision > Galactic > SpaceThreats
‪How to Defend Earth from Asteroids‬
Phil Plait   Aug 15, 2012   TEDTalks  

What’s six miles wide and can end civilization in an instant? An asteroid - and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.




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