Is it possible that this century is the most important one in human history? The 21st century has already proven to be a period of rapid growth. We're on the cusp of developing new technologies that could entirely change the way people live— and could contribute to unprecedented levels of existential risk. Explore how the decisions we make now might have a major impact on humanity's future. This TED-Ed lesson was directed by Jon Mayes, AIM Creative Studios, narrated by George Zaidan and the music was made by André Aires.