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Un Filtro de Arcilla Salva Vidas en Colombia
Enrique Mendoza es un pescador del Norte de Colombia. Le dicen…
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Five Questions for Kathy Ku, Co-Founder of SPOUTS…
Kathy Ku is a medical student who has applied her engineering…
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Water filters: First Ghana, then the world
With enough clay, rice husks, plastic buckets, time and training, Susan…
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