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Compared with eye-catching renewable power technologies like wind turbines and solar panels, energy efficiency is nearly invisible. But advocates say doing more with less power may be an even more critical weapon in the fight against climate change and offers big economic benefits, too. Worldwide, governments, companies and families could be saving trillions of dollars by improving efficiency with cars that go farther on less fuel and improved appliances, light bulbs and factories.
11/30 NT Times