Despite global warming we are going through a cold snap (it would be even colder if Cass stopped driving his car).

That aside, it got me thinking. It's 26 degrees in DC right now and my house is snug....just. The double glazing is doing its thing and the 16 inches of insulation in the roof seems to be working.

But my house is still pretty loose, despite all the work I have done on it to make it more energy efficient. I can't imagine what it would be like in here if it were zero degrees outside or even minus 20 degrees.

So, are people that live in parts of America where it routinely gets down into the minus temperatures just cold or do they have tricks to keep their houses warm which the rest of us have not caught on to yet, or just don't need?