911后：鲸鱼欢乐、孩子悲伤
<p>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。</p><p><span word="The">The</span> <span word="tragic">tragic</span> <span word="events">events</span> <span word="of">of</span> <span word="September">September</span> 11, 2001 <span word="changed">changed</span> <span word="the">the</span> <span word="world">world</span> <span word="forever">forever</span>. <span word="But">But</span> 11 <span word="years">years</span> <span word="after">after</span> <span word="the">the</span> <span word="terrorist">terrorist</span> <span word="attacks">attacks</span>, <span word="a">a</span> <span word="number">number</span> <span word="of">of</span> <span word="strange">strange</span> <span word="byproducts">byproducts</span> <span word="of">of</span> <span word="that">that</span> <span word="day">day</span>'<span word="s">s</span> <span word="events">events</span> <span word="are">are</span> <span word="coming">coming</span> <span word="to">to</span> <span word="light">light</span>.</p><p><span word="For">For</span> <span word="example">example</span>, <span word="two">two</span> <span word="independent">independent</span> <span word="studies">studies</span> <span word="have">have</span> <span word="suggested">suggested</span> <span word="that">that</span> <span word="events">events</span> <span word="directly">directly</span> <span word="connected">connected</span> <span word="to">to</span> <span word="the">the</span> 9/11 <span word="attacks">attacks</span> <span word="had">had</span> <span word="a">a</span> <span word="positive">positive</span> <span word="effect">effect</span> <span word="on">on</span> <span word="whales">whales</span> <span word="and">and</span> <span word="a">a</span> <span word="negative">negative</span> <span word="effect">effect</span> <span word="on">on</span> <span word="unborn">unborn</span> <span word="babies">babies</span>.</p><p><span word="As">As</span> <span word="first">first</span> <span word="reported">reported</span> <span word="by">by</span> <span word="the">the</span> <span word="Washington">Washington</span> <span word="Post">Post</span>, <span word="a">a</span> <span word="study">study</span> <span word="of">of</span> <span word="whale">whale</span> <span word="behavior">behavior</span> <span word="was">was</span> <span word="already">already</span> <span word="taking">taking</span> <span word="place">place</span> <span word="in">in</span> <span word="September">September</span> 2001. <span word="Researchers">Researchers</span> <span word="continued">continued</span> <span word="collecting">collecting</span> <span word="data">data</span> <span word="and">and</span> <span word="found">found</span> <span word="that">that</span> <span word="whale">whale</span> <span word="health">health</span> <span word="and">and</span> <span word="activity">activity</span> <span word="improved">improved</span> <span word="in">in</span> <span word="the">the</span> <span word="days">days</span> <span word="after">after</span> <span word="the">the</span> <span word="attacks">attacks</span>, <span word="when">when</span> <span word="nearly">nearly</span> <span word="all">all</span> <span word="shipping">shipping</span> <span word="activity">activity</span> <span word="in">in</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>. <span word="ground">ground</span> <span word="to">to</span> <span word="a">a</span> <span word="sudden">sudden</span> <span word="halt">halt</span>.</p>
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