Exclusive and legendary, the geographic North Pole, 90° north latitude, sits atop the Arctic Ocean and is covered with a spider web of pressure ridges and drift ice, as much as 10-feet thick in some spots. The destination is remote and the journey is demanding, but for a few hundred intrepid and fortunate adventurers each summer, the top of the world is attainable. At the start of each summer, when the light starts to linger...