Stephen Petranek: 10 ways the world could end

About this Talk

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?

About Stephen Petranek

When he was editor-in-chief of Discover magazine, Stephen Petranek tangled with questions as big as the universe. Here he confronts the biggest question on the planet: What are the 10 most likely ways that life on the Earth could end?