Canadian explorers have drawn a blank in the latest hunt for the remains of Captain Sir John Franklin's fatal expedition, 160 years after he took his crew of 129 men deep into the Arctic.In 1845, Capt Franklin, an officer in the British Royal Navy, took two ships and 129 men towards the Northwest Territories in an attempt to map the Northwest Passage, a route that would allow sailors to travel from the Atlantic to the Pacific via the icy Arctic circle. Stocked with provisions that could last for seven years, and outfitted with the latest technology and experienced men, the...