This is a no-brainer — insulating your home will save you money AND help reduce carbon emissions. Nansulate is a new insulating paint that can make this an easy and relatively inexpensive project. This is their home page:
Article from a home improvement magazine:
They have a new “one-room-at-a-time” campaign to save you even more:
The beauty of the paint is that it also resists mold and covers lead paint in older homes. I’ve checked out their safety, and it looks good too. I am also thinking of using their metal-paint-product to insulate the exposed plumbing in my basement.