4Hope of finding the Titan five - the crew on board a missing sub on an expedition to the Titanic shipwreck - have grown after rescue groups reported 'likely signs of life' and 'banging sounds.' A Canadian Aircraft, part of the enormous search mission looking for the missing Titanic tourists, heard 'banging' at 30-minute intervals in the area the submarine disappeared. The banging was noted in emails exchanged with the US Department of Homeland Security and seen by Rolling Stone. Richard Garriot de Cayeux, President of The Explorers Club, confirmed in a Tuesday night social media post that 'there is...