More profit with less carbon.

Offers a look at the benefits of focusing on energy efficiency for the protection of Earth's climate. Claim that climate protection would reduce costs; List of businesses that have boosted production while cutting energy use and greenhouse gas emissions, including chemical manufacturer DuPont; Importance of switching to fuels that emit less carbon; Availability of energy-efficient products such as light bulbs and electronic speed controls; Discussion of home heating systems and thermal insulation; Report that transportation consumes 70 percent of U.S. oil and generates a third of the nation's carbon emissions; Improvements that could be made to transportation's efficiency by combining lightweight materials with innovations in propulsion and aerodynamics; Increase of alternatives to coal-fired power plants, including solar power and wind power. INSET: CROSSROADS FOR ENERGY.