Techno-optimist Vinod Khosla believes in the world-changing power of "foolish ideas." He offers 12 bold predictions for the future of technology — from preventative medicine to car-free cities to planes that get us from New York to London in 90 minutes — and shows why a world of abundance awaits.

For a chance to give your own TED Talk, fill out the Idea Search Application: ted.com/ideasearch.

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Christendom College President Dr. Timothy O'Donnell on the Joyful Life of Faith