Taking cover: Frigid temperatures and snow have wreaked havoc from Asia to Europe to North America this week, leaving many people hoping that the cold snap passes soon. Above, a pedestrian in downtown Seoul on Jan. 4 uses an umbrella as shield against the falling white fluff while trudging across the snow-covered ground. That day, 28 centimeters (11 inches) of snow fell on the South Korean capital, the most in a single day since meteorological records began being kept in 1937.

Chung Sung-Jun/Getty Images

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