This story originally appeared on High Country News and is part of the Climate Desk collaboration.
Mike Williams Jr. doesn’t remember when he started mushing, but once he was strong enough to handle the sled dogs, it became his passion. At first, he mushed after school, taking his father’s dogs on 3- and 4-mile trails near his home in Akiak, Alaska. He ran the Iditarod for the first time in 2010 and has competed seven times since.
The Iditarod is Alaska’s best-known sporting event. Sled dogs and their mushers travel the roughly thousand-mile trail from Anchorage to Nome each year in March to
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