Winter on the North Shore can be beautiful and brutal. Between early-morning dog walks, school recess, shoveling out the driveway, cheering at outdoor hockey rinks, and commuting in blowing snow, it’s easy to push past your limits. That’s when cold-related injuries like frostbite and hypothermia become more than just textbook terms. They’re real threats that can escalate quickly if you don’t know the signs. The good news: with the right know-how ...