How Americans heated and powered their homes across 250 years

How Americans heated and powered their homes across 250 years The average American adjusts a thermostat or flips a light switch dozens of times a day without a second thought. Two hundred and fifty years ago, staying warm meant chopping, hauling, and feeding firewood into an open hearth all day. Even then, a glass of water across the room might freeze solid overnight. As the nation marks its...