Eco India: How the pattern of a beehive inspired the design for an affordable, natural air cooler
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हो गया गर्मियों का जुगाड़ //best cooling system for summer
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This Pot Can Keep You Cool in the Desert
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Resfriar Casas Sem Eletricidade?
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Eco India: Treating sewage water to make it drinkable could hold the answer to Delhi’s water woes
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How to cool our homes (even without ACs)
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Recycling revolutionary Veena Sahajwalla turns old clothes into kitchen tiles | Australian Story
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A Incrível Tecnologia da China que Está Assustando o Mundo
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