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S2 Ep8. A cow鈥檚 amazing stomach could hold the key to stopping wastewater pollution. Engineers have designed a new sewage treatment plant based on a cow鈥檚 unique digestive process. Wastewater is progressively cleaned by microorganisms until it鈥檚 safe enough to be released into the environment. This new plant does not need electricity to operate, so it鈥檚 environmentally-friendly. Thanks for listening. Let us know what you think. #30Animals Get in touch: www.bbcworldservice.com/30animals
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