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At the Environmental Protection Agency's fifth annual Sustainable Design Expo on the National Mall in Washington, DC, college students exhibited their projects addressing sustainability issues including alternative energy, water purification and green buildings.
Download the slide show's audio in MP3 format
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Produced by: Lea Winerman |
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| Arsenic in Mongolia |
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| Allison Hahn of the University of Pittsburgh describes her team's project to simply and cheaply remove arsenic from drinking water in Mongolia. |
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Speaking: Allison Hahn
Photo Credit: Travis Daub, Audio Credit: Lea Winerman |
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