Stinkin’ rich
Sewage sludge carries loads of valuable metals
![Money from sewage illustrated](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/04/bm_scistat_preciousmetals_free.jpg?fit=860%2C460&ssl=1)
MONEY FLUSH Millions of dollars’ worth of gold, silver and other expensive elements swirl down the drain and into sewage treatment plants.
© jgroup/iStock
Sewage sludge carries loads of valuable metals
MONEY FLUSH Millions of dollars’ worth of gold, silver and other expensive elements swirl down the drain and into sewage treatment plants.
© jgroup/iStock