Have wolves crossed the Brandywine?

It is predicted to get below zero tonight -- 0°F, which I believe is -18°C -- and the management office at my apartment distributed flyers reminding everyone to keep their thermostats set to 68°F at a minimum and turn the faucets on to a trickle tonight to keep the water pipes from freezing.

I'm contemplating sleeping in the living room tonight, because my bed is right up against an outside wall, and my heater has not been able to keep up -- it's been running almost constantly today and the temperature in my place is about 65°F.