In August 1913, the explorer and scientist Fridtjof Nansen (1861-1930), who later received the Nobel Peace Prize for his humanitarian work, set off from Norway to find a sea route across the north of the Eurasian continent. This 'north-east passage' had been the goal of explorers since the sixteenth century, but Nansen's object, as he puts it, was 'to open up a regular trade connexion with the interior of Siberia, via the Kara Sea and the mouth of...