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Those born today will live more than a hundred years on average. But this life span is not much compared to the possibility that genetic science will provide. How desirable is such a situation? Subscribe to see a selection of BBC Persian TV programs: / bbcpersian Our website: http://www.bbc.co.uk/persian/ Facebook: / bbcpersian Twitter: / bbcpersian Google Plus: https://plus.google .com/1181902398236...