Energy is important. We need it to live and work, for comfort and convenience, for health and safety. With little thought, we flip the various energy switches in our lives every day, and out it flows.

But do we need this much juice? Convincingly, Bruce Harley say no and provides a prescription for reduced energy dependence. In his book Insulate and Weatherize (Taunton Press, 2002, $19.95 softcover, 202 pages), Harley shows that in the long run, it's easier, cheaper, and healthier to build homes that use less energy.

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