“Sweet Motion of the Northern Lights,” a multi-block sculpture at the 2007 World Ice Art Championship in Fairbanks, Alaska (@ Patrick Endres/Getty Images)

“Sweet Motion of the Northern Lights,” a multi-block sculpture at the 2007 World Ice Art Championship in Fairbanks, Alaska (@ Patrick Endres/Getty Images)

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Polar bear rolling on the frozen Beaufort Sea, near Point Barrow, Alaska (@ Patrick J. Endres/Visuals Unlimited)

Polar bear rolling on the frozen Beaufort Sea, near Point Barrow, Alaska (@ Patrick J. Endres/Visuals Unlimited)

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