Stephen Petranek: 10 ways the world could end

http://www.ted.com - Stephen Petranek reveals the question that occupies scientists at the end of the day (and the beginning of happy hour): How might the world end? He lays out the challenges that face us in the drive to preserve the human race. Will we be wiped out by an asteroid? Eco-collapse? How about a particle accelerator gone wild?

Author: TEDtalksDirector
Length: 29:54
Views: 37399
Tags: end  of  ted  tedtalks  the  world