Word: toxicities
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...major focus of the expedition is pollution. Although concentrations of many contaminants have been markedly reduced in the Great Lakes (Superior is the cleanest), toxic chemicals like PCB remain a problem. Researchers plan to devote 16 dives to studying the nepheloid, a cloudy, particle-laden 6-in. layer of water just above the lake floor that seems to trap, and then rerelease, pollutants. "We had thought that bottom sediments were sort of permanent sinks for contaminants attached to particles," explains Steven Eisenreich, a professor of environmental engineering at the University of Minnesota. "Now we're finding out that under certain...
...clue to how pollutants travel may lie hi the giant furrows (up to 3 ft. deep and 20 ft. across) that stretch for miles along the lake floor. Scientists think that the trenches, similar to those on ocean bottoms, are carved by currents of water that can also disperse toxic material. Other investigators will concentrate on collecting two shrimp like organisms in the food chain, including Ponto-poreia hoyi, that dwell on the sediment and may ingest toxic chemicals...
...Editors: After reading "The Poisoning of America '85" [ENVIRONMENT, Oct. 14], I have concluded that it will not be the Soviets who do us in. It will be toxic wastes and our own stupidity. Edgar Dorton Bowers Salisbury...
...November's election. Although the state went to George W. Bush in the presidential race, coloring it red on the electoral maps, it also chose its first Democratic Governor since 1984, broke the G.O.P.'s hold on the state legislature and backed a pair of progressive ballot initiatives banning toxic mining practices and legalizing medical marijuana...
Radon is not the only indoor public-health hazard that has increased because of the pursuit of energy efficiency. The EPA reported in June that eleven toxic air pollutants may pose a threat in the average home, where they are believed to be generated by common household products and building materials. Prior to the report, Democratic Senators Frank Lautenberg of New Jersey and George Mitchell of Maine and Republican Senator Robert Stafford of Vermont introduced the Indoor Air Quality Research Act, which calls for further examination of the hazards of radon and other indoor air pollutants...