A new study, just published in the Proceedings of the National Academy of Sciences challenges the rosy picture.

最近发表在《国家科学院院刊》上的一项新研究对这一乐观前景提出了挑战。

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It is the first to compare organic and conventional agriculture across the main goals of sustainability identified by the National Academy of Sciences: productivity, economics, and environment.

它是第一个从国家科学院所确定的可持续性主要目标，即从生产力、经济效益和环境这几方面来比较有机农业和传统农业。

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A 2018 study published in the Proceedings of the National Academy of Sciences, for example, followed researchers in the Netherlands.

例如，2018年发表在《美国国家科学院院刊》上的一项研究跟踪调查了荷兰的研究人员。

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The report by a team from the United States and China appears in the Proceedings of the National Academy of Sciences.

VOA: special.2009.10.27

Geographers from three American colleges did a study that will appear in the Proceedings of the National Academy of Sciences.

VOA: special.2010.03.23

A report on the team's discovery was published recently in the Proceedings of the National Academy of Sciences.

VOA: special.2009.05.12

For example, the Proceedings of the National Academy of Sciences, the official journal of the National Academy of Sciences, allows NAS members submitting papers for publication in PNAS to select their own referees.

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Published in the online version of Proceedings of the National Academy of Sciences, the report said soil management practices in the region's corn and soybean fields are partly to blame.

NPR: Report Predicts Ever-Bigger Lake Erie Algae Blooms

For instance, Robert Hahn of the conservative American Enterprise Institute thinks a panel of experts from the National Academy of Sciences should study the issue.

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