Science and technology now allow us to "hack" solutions to the biggest challenges of our time. But how far is too far? And what are the consequences of these hacks? In this hour, we hear stories from TED speakers who dare to hack the brain, the climate, and even the animal kingdom in hopes of creating a better world.

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Tags:  Quicker processes,  Hackers,  Cyber security,  Brain Computer Virus,  Lahore,  Pakistan,  Programming,  Hackers trying to save the world,  Stewart Brand