Portland has made incremental advances in reducing its sewage overflows since the Clean Water Act went into effect more than 20 years ago.

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Train, who was the EPA administrator when the Clean Air Act went into effect, overrode objections from industry in order to regulate lead emissions from automobiles in the 1970s.

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"The side-effect profile looks amazingly clean, " says Jeffrey A. Lieberman , vice chair of psychiatry at the University of North Carolina in Chapel Hill Medical School.

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But it is the states that may have the most to lose if these clean up goals are put in to effect.

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The Systems Biology Knowledgebase or KBase will allow scientists to predict the effect of microbes on their communities and if they can clean-up contaminated environments or sequester carbon on land, for example.

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If Mr Eppig is right, the near-abolition of serious infections in these countries, by vaccination, clean water and proper sewerage, may explain much if not all of the Flynn effect.

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The editor-in-chief of Bicycling magazine, Peter Flax, told HLNTV.com that he thinks the scandal would have an effect in the short term but that people should understand that cycling has already made moves to clean up its act.

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NextEra, with 95% of its portfolio in clean or renewable fuels, noted that the mark-to-market effects of certain hedges, the net effect of other than temporary impairments (OTTI), and certain asset sales had a substantially negative effect on its earnings.

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