Switch to compact fluorescent bulbs. They cost more than standard ones, but last 10 times as long and use one-quarter of the energy. If every household installed one, the combined reduction in carbon emissions would be equal to taking 800,000 cars off the road.
Curb your clothes dryer. It consumes more energy than any other household appliance, except for your refrigerator. Take advantage of the moisture-sensor setting, which shuts the machine off as soon as the job is done.
Write to your representative in Congress. When a bill on fuel standards or clean air and water comes up, show your support in a handwritten note instead of a form letter or an e-mail. "It carries a lot more weight," says Wendy. "And politicians do respond to constituents, especially soccer moms, if they hear from enough of them."