Decoding the Genome Was Just the Beginning

Eighteen years ago, scientists decoded the human genome. But what was supposed to create an era of new cures didn't work out that way, at least not at first. In episode four of Prognosis, some of the most famous names in genetics explain why it took so long to go from mapping life's code to actually helping people, laying the foundations for technologies on the scientific and ethical cutting edge, like modifying people's genes.  

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