科学家核事故将引发男婴潮

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1、科学家：核事故将引发“男婴潮”NuclearagehasledtomillionsoffewerbabygirlsbeingbornNuclearradiationfrompowerplantleaksandbombtestsresultedinmi1lionsfewerbabygirlsbornworldwide,accordingtoanewstudy.Scientistsnotedthesetypesofatmosphericblastsratherthanon-the-groundincidentslikeChernobyl,effectedbirthgendorac

2、rosstheglobe・ScientistsatHelmholtzZentrumMUnchen,Germany,analysedpopulationdatafrom1975to2007fortheU.S.and39Europeancountries.Therewasanincreaseinthenumberofbabyboysrelativetogirlsinal1ofthecountriesfrom1964to1975.ThiswasthecaseinmanyeasternEuropeancountriesforseveralyearsafter1986.Scientis

3、tsareputtingthefirstspikedowntotheatomicbombtestsofthe1960sand1970swhereradioactiveatomswereblastedintotheatmosphere.Aircurrentscaughttheseatomsandthendistributedthemaroundtheworld・Theythinkthesecondspikeisduetothe1986ChernobyldisasterinwhichthereactorexplodedintheUkrainc.TheeffectsofCherno

4、by1werefeltlocallyandnoeffectwasseenintheU・S・,probablybecauseitwastoofarfromthedisastertohaveaneffect.'ThecloserthecountrywastoChernoby],thestrongertheeffect,Jsaidstudyco-authorHagenScherb,abiostatisticianattheGermanResearchCenterforEnvironmenta1Hea1thinMunich.Moremaleswerebornrelativetofem

5、alesinBelarus-theUkraine'sncighbour-thaninFranee.ThestudyisbasedlargelyonColdWar-erastatistics,butthefindingsarehighlyrelevantforhowgendercouldbeeffectedafterfuturenucleardisasters.AndinthewakeofJapan'sFukushimaDaiichinuclearpowerplantaccidentexpertsarepredictinganotherbabyboyboomcouldboimm

6、inent,especiallyontheU.S.WestCoast.Previousradiationexperimentsonanimalsmaygiveacluefortheincreaseinmalebirths.TestsshowedthatradiationcauseddamagetotheXchromosomeinsperm,DrScherbsaid・AhumanspermcellcontainseitheranXorYchromosome,whileaneggonlyhasaXchromosome.AnXYcombinationwillbecomeaboy,w

7、hi1eanXXcombinationwillbeagirl.根据一项新研究，核电站核泄漏事故和炸弹试验释放的放射性物质导致全世界女婴出牛•数量减少了数百万名。科学家指出，这种大气屮发生的核爆炸（而非切尔诺贝利这种地面发生的核事故）影响了全球范围内出生的婴儿的性别。徳国亥姆霍兹慕尼黑中心的科学家们分析了1975年到2007年间美国和39个欧洲国家的人口数据。从1964年到1975年，在所有这些国家，男婴的数量相对于女婴数量都增加了。在1986年之后数年间，在许多东欧国家也发生了同样的情况。科学家认为首当