Photograph: © SAF
Excerpts;
Levels of copper, cadmium, lead and other metals in Southern California’s coastal waters have plummeted over the past four decades, according to new research from University of Southern California.
Sergio Sañudo-Wilhelmy, who led the research team, attributed the cleaner water to sewage treatment regulations that were part of the Clean Water Act of 1972 and to the phase-out of leaded gasoline in the 1970s and 1980s…
