RT @ShankerRuby: @pfanderson @mattmckenz6 Yes, I know of active healthy seniors too. Ready to run a marathon or salsa at 95+. #bioethx

RT @ShankerRuby: @pfanderson @mattmckenz6 Yes, I know of active healthy seniors too. Ready to run a marathon or salsa at 95+. #bioethx (via Twitter http://ift.tt/1q4OFgi)