<p>Captain Francis Crozier was a major figure in 19th century Arctic and Antarctic exploration who led the doomed Franklin Expedition's battle to survive against the odds. It is a compelling story which refuses to be laid to rest and recent discovery of his lost ships above the Arctic Circle gives it a new urgency. <br>The ships may hold vital clues to how two navy vessels and 129 men disappeared 170 years ago and why Crozier, in command after F...