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November 4, 2003
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Hudson Bay, Canada
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1996
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Flip Nicklin
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"After spring mating, fertilized [polar bear] eggs do not begin to develop until fall. Thus a female delays giving birth until midwinter. She emerges with her cubs in spring, when she can hunt newborn seals to replenish her fat reserves. For about two and a half years mothers nurse their cubs with milk containing 35 percent fat—a security blanket for the Arctic winter."
—From "Polar Bears: Stalkers of the High Arctic," January 1998, National Geographic magazine
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