Stephen Petranek:

10 ways the world could end

How might the human race end? Stephen Petranek lays out 10 terrible options and the science behind them. Will we be wiped out by an asteroid? Eco-collapse? How about a particle collider gone wild?

Stephen Petranek

Technology forecaster

Stephen Petranek untangles emerging technologies to predict which will become fixtures of our future lives — and which could potentially save them. Full bio