You can read the entire article here, but here are some highlights:
The article says not only to open windows but to use fans for comfort. Jay Hoover, president of Integrity Air, recommends that you be sure to turn off fans when you leave the room to save energy.
The article says that doing laundry at night when it is cooler helps as well as replacing standard incandescent lightbulbs with the new compact flourescent bulbs, which give off much less heat. Compact flourescent bulbs are more energy efficient, give off less hest and last longer. However, they contain mercury, and must be disposed of with care and time of replacement.
Also running the bathroom exhaust fan for 10-20 minutes after a shower will help lower indoor humidity.