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Evidence of Innocence, India's Gold, Michael Phelps

July 22, 2012 8:00 PM

Michael Morton was exonerated by a DNA test after spending nearly 25 years in prison. Did a prosecutor hide evidence that could have proven his innocence? Then, Byron Pitts reports on India's obsession with gold; Also, Michael Phelps is back to a strict training regimen after uncertainty about returning to the Olympic games.

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