(Jean Pieri/Pioneer Press via AP, File) In this Jan 30, 2019, file photo, a firefighter walks past an ice-encrusted home after an early morning house fire in St. Paul, Minn. The dangerous cold and heavy snowfall that hobbled the northern U.S. this week has retreated, but not before exacting a human toll: more than 20 deaths and hundreds of weather-related injuries including frostbite, broken bones, heart attacks and carbon monoxide poisoning.