China

  • Poo Power: How China is turning human faeces into 'Black Gold'

    A growing portion of China's toilet waste is being converted into poo power (fertilizer and biogas. In Beijing, 6,800 tons of human excrement are treated each day, by some estimates: Enough to fill almost three Olympic-size swimming pools. Over the past decade, China's economic ascent has driven millions of rural workers into its cities in the largest migration in human history. In 2013, the number of urban dwellers crossed 731 million, overtaking the rural population by more than 100 million. That's forcing city planners to get creative in dealing with toilet refuse, and drawing engineers like Heinz-Peter Mang to help refine models.Read More »

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