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发生在11年前的911恐怖袭击事件改变了很多事情，不过有一些改变直到最近才引起人们的注意。有两项独立研究显示，911恐怖袭击对鲸鱼活动产生了积极的影响，而对很多当时尚未出生的婴儿则产生了负面效应。《华盛顿邮报》刊登的一份研究显示，911恐怖袭击之后，美国境内几乎所有船运活动都突然中止，由此导致美国附近海域的鲸鱼群的健康状况和活动水平都有所提升。另一项表观遗传学研究则显示，911袭击时纽约市1700多名怀孕女性中有大部分都将创伤后压力心理障碍症传给了她们未出生的孩子。研究结果显示，这些孩子出生后的皮质醇水平都偏低，而这个因素通常都与创伤后压力心理障碍症有关。 The tragic events of September 11, 2001 changed the world forever. But 11 years after the terrorist attacks, a number of strange byproducts of that day's events are coming to light. For example, two independent studies have suggested that events directly connected to the 9/11 attacks had a positive effect on whales and a negative effect on unborn babies. As first reported by the Washington Post, a study of whale behavior was already taking place in September 2001. Researchers continued collecting data and found that whale health and activity improved in the days after the attacks, when nearly all shipping activity in the U.S. ground to a sudden halt. | 
