Ten years ago we moved into a house with central air conditioning, a luxury we never had before. It made me nervous at first. When I pressed the switch the house began to hum like a factory, and freezing air came roaring out of the vents. The electric meter was whizzing around like something in the Indianapolis 500.
Now we have this difficult choice to make every day in summer. When the air conditioning is on the house feels like an outpost in Antarctica, or a corporate office. When the system is off it feels like a Turkish bath, with President Erdogan turning up the heat.