National Sustainable Design Expo
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The Fourth Annual National Sustainable Design Expo was held April
20-22, 2008 on the National Mall in Washington, DC. Over 40 Exhibitors
and over 50 P3 teams demonstrated their sustainable designs and new
products for green buildings, innovative alternative energy
technologies, strategies for rainwater collection and purification,
and many more sustainable technologies were demonstrated by more than
40 exhibitors (see exhibitors). This year’s event co-sponsors Cloud Institute for Sustainability Education 
and the World Environment Center .
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