Santa Clara University

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Who: Cora Zayas Sayre, Executive Director

What: Water, Agroforestry, Nutrition and Development Foundation (WAND): www.wandphilsorg.com

Where: Philippines

When: The Tech Awards 2011 Intel Environment Award Laureate: www.thetechawards.thetech.org/

How: WAND has developed a low-cost composting toilet using local materials called Ecosan, which prevents water contamination and the spread of disease while producing valuable fertilizer from human waste. In the Philippines, 20 million people have inadequate access to sustainable sanitation.