From waste to 'black gold'
By Bloomberg | China Daily | Updated: 2015-03-09 07:54
A growing number of Chinese farmers are making full use of
fecal sludge at home by turning it into fertilizer and biogas
Heinz-Peter Mang is obsessed with turning human waste into gold. As millions of Chinese move to cities, the German engineer is convinced the country is on the way to hitting the jackpot.
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