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A recent study by the National Trust for Historic Preservation's Preservation Green Lab shows that retrofits of existing projects are nearly always greener than new construction projects.
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The solar-powered housing competition moves to the West Coast, and adds teams from Prague and Vienna.
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Furthering its commitment to reducing global carbon emissions, the Urban Land Institute has transformed its Greenpoint Foundation into a research center operating within the organization's Climate, Land Use, and Energy initiative.
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A new report advises the Obama administration on how it can advance energy efficiency and sustainability in buildings without introducing new legislation.
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The District of Columbia tops the list with 31.5 square feet of LEED-certified space per capita.