Ideas worth spreading

Stephen Petranek faz contagem regressiva para o Armagedon

1,997,596 views | Stephen Petranek • TED2002

Como o mundo poderia terminar? Stephen Petranek coloca os desafios que enfrentamos no desejo de preservar a raça humana. Seremos varridos por um asteroide? Colapso ecológico? E se um acelerador de partículas enlouquecer?

Como o mundo poderia terminar? Stephen Petranek coloca os desafios que enfrentamos no desejo de preservar a raça humana. Seremos varridos por um asteroide? Colapso ecológico? E se um acelerador de partículas enlouquecer?

This talk was presented at an official TED conference. TED's editors chose to feature it for you.

About the speaker

Stephen Petranek

Stephen Petranek

Technology forecaster

See speaker profile

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

Learn more

This talk was presented at an official TED conference. TED's editors chose to feature it for you.