Water is our future. Episode 2, Emscher : the miracle in the coalfields / author and director, Michael R. Gärtner.
We're witnessing the comeback of a small river and an entire landscape. For decades the Emscher in the Ruhr District was the most polluted river in Europe. Now it's being returned from an industrial sewer to a natural river system. With the help of wastewater treatment plants, liberated ri...
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