It’s not dark yet, but the temperatures have been dropping. They’re back to being lower than here in the Midwest, as it should be, unlike last month where some record low temperatures created days where the South Pole was a relatively warm place. Well, maybe “warm” isn’t quite the right word for it. Warm or cold, the South Pole station is officially closed for winter. The last arriving plane was guided in by some hand signaling, while the last plane out left a trail of ice crystals in its wake. Let the hibernation begin.