@CNN: Scientists are trying to solve the mystery of what killed a Civil War submarine crew https://t.co/3gyyt6Vw8J https://t.co/X6PbdIWXY5
Scientists are trying to solve the mystery of what killed a Civil War submarine crew https://t.co/3gyyt6Vw8J http://pic.twitter.com/X6PbdIWXY5
— CNN (@CNN) August 27, 2017