- Missing Titanic tourist submarine live updates: Is sub out of oxygen?USA TODAY
- Live updates: Missing Titanic sub search continues as officials fear oxygen is running outCNN
- Missing Titanic sub updates: Latest on search effortsThe Associated Press
- Why recovering the missing Titanic sub is so challengingReuters
- Opinion: While we hope for the best for the lost Titanic-exploring submersible, let’s not forget these other victimsCNN