Each year, more than $3 million in gold and silver wind up in Swiss wastewater, scientists found. But in most cases, it doesn't make economic sense to extract and recycle the metals.
Wednesday, October 11, 2017
NPR News: There's Gold In Them Thar Sewage Pipes, Swiss Researchers Say
There's Gold In Them Thar Sewage Pipes, Swiss Researchers Say
Each year, more than $3 million in gold and silver wind up in Swiss wastewater, scientists found. But in most cases, it doesn't make economic sense to extract and recycle the metals.
Each year, more than $3 million in gold and silver wind up in Swiss wastewater, scientists found. But in most cases, it doesn't make economic sense to extract and recycle the metals.
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