Take a journey deep inside your DNA, as World Science Festival discuss the promise and peril of interfering with the code therein. For the first time in history, human beings have been given the keys to the car called Evolution. A breakthrough technology now allows us to modify genes with ease and precision. Within the next year or so, its power will be starkly revealed when a living, breathing wooly mammoth is born, the first since the Ice Age. For human applications, trials of this new technology are already underway seeking to eradicate various debilitating genetic diseases. But like teenagers at the wheel, we’re still learning to drive. Are we zooming toward a happy, healthy, well-fed future, or toward a cliff?

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MODERATOR: Lesley Stahl PARTICIPANTS: Fred Gould, Josephine Johnston, Neville Sanjana, Sam Sternberg