Winter in Yellowstone National Park. Driving snow and sub-zero temperatures collide with spewing heat from subterranean forces, creating dramatic, otherworldly displays. Host Bill Pullman leads us through the vast blankets of snow, the "diamond dust," that glitters in the air and rivers warmed by geothermal springs, to see how the park"s wild animals overcome the challenges of survival in the most extreme season in this unique land.">
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