Quest, the last ship helmed by the adventurer, is discovered off Canada's east coast
                                
                                
                                    (Newser) -
                                    Though not as famous as Ernest Shackleton's Endurance, one of the most sought-after shipwrecks in the world before its  2022 discovery , the sunken ship on which the Antarctic explorer made his final voyage has now been discovered, too. Quest, on which Shackleton suffered a fatal heart attack while trying...