‘Dead zones’ expanding, study says
The number of oxygen-starved “dead zones” in coastal waters around the world has roughly doubled every decade since the 1960s, killing fish, crustaceans and massive amounts of marine life, according to a new study.
“These zones are popping up all over,” said Robert Diaz, a professor at the Virginia Institute of Marine Science who led the study published online by the journal Science.
Diaz and coauthor Rutger Rosenberg of the University of Gothenburg in Sweden counted more than 400 dead zones. Factors include chemical fertilizers and air pollution.