5/86Corporate sponsors of the recent dog-sled expedition to the North Pole: 65

Steger International Polar Expedition (Ely, Minn.)

12/03Year in which a terrorist threat against “S. Claus,” the “Prime Minister” of the North Pole, was declassified by the CIA: 1997

National Security Archive (Washington)

6/07Number of recent computer models that a team of climate experts studied to assess Arctic warming: 15

Mark Serreze, National Snow and Ice Data Center (Boulder, Colo.)

    Number of the models that showed the North Pole having ice-free summers by 2100: 7

Mark Serreze, National Snow and Ice Data Center (Boulder, Colo.)