Minnesota Public Radio slideshow:
Nicotine and frostbite
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Margaret Bisek takes about five cigarette breaks a day outside her office in downtown Duluth. When the temperature is below zero, like it was Monday, she keeps her breaks short. (MPR Photo/Chris Julin)

Margaret Bisek takes about five cigarette breaks a day outside her office in downtown Duluth. When the temperature is below zero, like it was Monday, she keeps her breaks short.

(MPR Photo/Chris Julin)
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