In this recent TED talk, Jason Pontin discusses the evolution of the place of technology in our society in the last 50 years. Starting with a discussion of the 1969 Buzz Aldrin’s historical step on the moon Pontin ponders why such a great achievement was possible. This naturally leads to the question of why space exploration has relatively slowed down. For instance, why do Mars colonies still sound like science fiction rather than reality? For more TED talks check out the links below.