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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. »
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North American bird population is declining. The decline is accelerating in regions associated with intensive agriculture.
牛刀小结曾经的 “东北药茅”，用十年时间缔造神话，却用四年时间把一手好牌打得稀烂。