They may seem remote and inhospitable to many, but the Earth’s frigid polar regions – whether above the Arctic Circle close to the North Pole, or on the ice-clad Antarctic Archipelago – possess a beauty all their own in snow-covered cliffs, massive floes of glistening ice, and calving glaciers. They’re also home to some remarkable species: polar bears, arctic foxes, arctic moose, reindeer, seals, walruses, and arctic terns up north… and down south, a host of penguin varieties, and many kinds of whales.