Nearly 1,000 people suspected of being in the United States illegally were arrested on Sunday alone across the country, the ...

门多塔湖中的大多数细菌物种会随着季节变化迅速进化，并在过去20年中每年恢复到相似的状态。图中的蓝点表示 Nanopelagicus 属内各物种在基因上随时间发生的变化程度，黑线则为6个月移动平均值。（图/University of Texas at ...