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Old 10-01-2014, 11:05 AM   #1
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Default New Generation-Growing Up Reading Rachel Carson

New generation: Growing up reading Rachel Carson, scientists unravel risks of new pesticides — Environmental Health News


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It helps that new tools allow today’s scientists to find concentrations in the parts per trillion, unimaginably low to researchers even a few decades ago, but, as it turns out, significant to some creatures. Even though concentrations are often low, the sheer number of manmade chemicals in the environment today is much greater and the span far wider than during Carson’s days.
“Sometimes I feel like it’s a Hydra: You cut off one head and several more spring up,” says Cynthia de Wit, a professor of environmental science at Sweden’s Stockholm University who studies wildlife and human exposures to chemicals. “It becomes almost a frantic feeling. You’re just looking at one and they’ve developed 10 more. You just can’t keep up with the pace.”
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Old 10-01-2014, 04:34 PM   #2
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Opinion: We must hear – and heed – the nightingale's warning — Environmental Health News

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These declining bird populations are sending us big, flashing warning signs about the quality of our own lives. In the United States, one distinctive community of specialists, including the bobolink, eastern and western meadowlark, grasshopper sparrow and upland sandpiper, has been sending us winged warnings for the past three decades. As croplands across the middle of North America convert from family farms into horizon-to-horizon crops boosted by pesticides and fertilizers, birds that once sang from fence posts and utility poles are becoming scarce or disappearing altogether.
Meanwhile, drinking water is contaminated with farm runoff and barges get stuck in sediment-filled rivers because grasslands no longer intercept silt-laden runoff. As it turns out, bird populations are not just measures of their own health; they also signal changes that directly affect human beings.
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