Photo by kiliiiyuyan / Kristy Berington and her sister Anna compete in Alaska’s Iditarod, a long-distance dogsled race. During training, Kristy’s dog team mushes across the frozen marshland in Willow, Alaska, at night. With February daytime temperatures in the era of climate change at 45 degrees (7°C)—well above freezing—mushing at night keeps the dogs from overheating. seeingdoublesleddogracing #iditarod #dogsled #alaska