People are coming up with ways to renovate and build homes, less energy and fewer resources. This is important because buildings account for about 40 percent of all energy use. Plus, heating, cooling, lighting, and running buildings are responsible for 38 percent of the world?s carbon emissions?that?s more than comes from all the cars and ?green? buildings are best for the environment. And there?s a twist to this cool new trend. You?ve heard the saying ?Everything old is new again?? Well, some of the ideas behind ?green? buildings have been around for ages.
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