Rescue efforts continue to find missing Titanic submersible, as details emerge on passengers
                                
                                
                                    (Newser) -
                                    As the  search continues  off the coast of Newfoundland for the Titanic-bound submersible that  went missing  over the weekend, more details have emerged about the five passengers on board. Action Aviation CEO Hamish Harding, a billionaire and British adventurer,  is one of the five , as are French explorer  Paul-Henri Nargeolet...