It's hard to imagine how the future might look and feel. Anab Jain wants to change that. She designs prototypes of potentially grim futures to raise awareness of our choices in the present

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From genetically modified animals and crops, we can already manipulate DNA. But futurist Juan Enriquez argues soon we can take full control of human evolution to create a better life for all of us.

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New gene editing tools hold a great deal of promise, but biologist Paul Knoepfler says we should be cautious. He warns altering DNA can have dire consequences, including a new form of eugenics.

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Does super human artificial intelligence sound like science fiction? Not for Sam Harris. He says it's not a question of if but when -- with potentially destructive consequences.

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