Studies have shown that air pollution has a great effect on the white matter in the brain, but not the grey matter.

研究表明，空气污染对大脑中的白质有很大影响，但对灰质没有影响。

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Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.

科学家称这两项研究都表明，生态系统的某些部分对于大气污染的减少反应迅速，但这些发现不应该成为允许污染的理由。

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Previous studies have shown how falling aerosol pollution will affect the rate of global climate change.

此前的研究表明气溶胶污染的降低将影响全球气候变化的速率。

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Algorithms might be designed, for example, to infer how many times per day a refrigerator door was opened (relevant to dietary and obesity studies), the times of day a residence was occupied (relevant to air pollution health studies), and even the pattern of sleep (relevant to a variety of health studies).

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It may be a confounding variable in studies of air pollution or other causes of disease.

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At the same time, our environment is too dirty: Studies show that pollution (such as exhaust fumes) can trigger allergic flare-ups.

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