New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »

· · 来源：study资讯

North American bird population is declining. The decline is accelerating in regions associated with intensive agriculture.

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Фото: Serhii Korovainyi / Reuters，这一点在WPS下载最新地址中也有详细论述

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