Former astronaut and U.S. senator John Glenn has had a heart valve replacement as he approaches his 93rd birthday. A spokesman at Ohio State University said Glenn, the first American to orbit Earth, ... more 
Former astronaut and U.S. senator John Glenn has had a heart valve replacement as he approaches his 93rd birthday. A spokesman at Ohio State University said Glenn, the first American to orbit Earth, was recuperating. less 
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Wochit
Thu, Jun 12, 2014 8:20 AM EDT