@CNN: Scientists are trying to solve the mystery of what killed a Civil War submarine crew https://t.co/DEneidX5Hl https://t.co/HVw01OkutA
Scientists are trying to solve the mystery of what killed a Civil War submarine crew https://t.co/DEneidX5Hl http://pic.twitter.com/HVw01OkutA
— CNN (@CNN) August 27, 2017