What modern civilization flushes and tosses is so wasteful that the contents of our sewers and landfills are richer than the ore we mine. Cities are already starting to extract millions of dollars of metals and minerals from sewage. The gold in the sewers would be considered a rich vein in a mine. Time to sift through our rich filth.
“Sewage Sludge Can Contain Millions Of Dollars Of Gold” – Science
Pretending Not To Panic 