Hey Mr. Green,
I recently spent five months touring the country with the American Shakespeare Center and tried my best to be green on the road. I unplugged the clock, microwave, and fridge and kept my water usage to a minimum. What else can we travelers do? — Kevin in Detroit

Mr Green answers:
Turn the heat down to 68 degrees Fahrenheit or lower in winter (60 degrees when you're sleeping), and in summer, turn the air conditioner off or the thermostat up to 78 or higher. Use towels more than once, and take mass transit when possible for your side trips. If you want to go all-out, turn off the TV. (Having to entertain yourself will also build character and sharpen your acting talent.) Avoid wasting energy in your vacant home by unplugging or shutting off as much as is practical, turning the heat down as low as possible in winter (but not so low that your pipes would freeze), and turning the air conditioner off. If you have a conventional tank water heater, turn it off too. Finally, as Shakespeare himself said, albeit under tragic circumstances, "Put out the light, and then put out the light."