As we find ourselves deep in winter, it’s only natural to think about something that’s on many of our minds during the chilly months: staying warm! Creating and maintaining sources of heat have been some of the most vital, life-preserving actions in the thousands upon thousands of years of human history. From huddling around campfires in caves or warming our hands by wood-burning stoves to installing modern, high-tech central heating solutions, humans have always done our best to keep warm when it’s cold out. But while it’s easy to understand how a campfire can keep you warm, modern furnaces are […]