Dead worms show river cleanup works - US study
Dead worms have helped prove that pollution cleanup efforts can really work, U.S. researchers said. The worms died when they were put in water polluted with the toxic metal cadmium - showing they had
Dead worms have helped prove that pollution cleanup efforts can really work, U.S. researchers said. The worms died when they were put in water polluted with the toxic metal cadmium - showing they had