该研究成果刊登在美国《国家科学院学报》22日网络版上。

The research is published in the online journal Public Library of Science.

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根据美国国家科学院学报称，在安第斯部分地区，几乎每个人都在他们的家庭菜园种亚贡雪莲果。

In some parts of the Andes, almost everyone has yacon in their family gardens, according to the National Academy of Science.

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然而，马克斯·普朗克研究所的气象学家德克·诺茨在《美国国家科学院学报》撰文，说北极的冰盖是稳定的。

But in the Arctic, another feedback may stabilize the ice, wrote Max Planck Institute meteorologist Dirk Notz in PNAS.

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