Five months have gone by since the operation that allowed 3-year-old Grayson Clamp, born deaf, hear the voice of his father for the first time. While progress has been made, with Grayson spontaneously... more 
Five months have gone by since the operation that allowed 3-year-old Grayson Clamp, born deaf, hear the voice of his father for the first time. While progress has been made, with Grayson spontaneously saying a few words, it appears he still has a lot of catching up to do. Dr. Jon LaPook reports. less 
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Wed, Oct 23, 2013 9:11 PM EDT