Thedocumentarydepictsmonarchbutterfliesgreatandmysteriousmigration.Eachyearsautumn,millionsofmonarchbutterfliesstarttheirincrediblesouthwardmigrationfromCanada,crossAmerica,toMexico.Theyflyabove2,000milestoarrivethemountainofMexico.....ThefilmopenswithcaterpillarsmunchingmilkweedinsouthernCanadainlatesummer.Sooneachcaterpillartransformsitselfintoasilkychrysalis.Roughly10dayslater,adelicatefour-wingedmonarchemerges.Then,atsomeunknownsignal,themonarchstaketotheaironatwo-month,2,000-mileflightoverfields,forests,cities,plains,openwater,deserts,andfinallymountainstocongregateinatiny,high-altituderegionofcentralMexicowheretheyveneverbeenbefore.Incredibly,theyarrivebythemillionsatthesametimeeachyear.Sheddinglightonthisnaturalwonderaresomeoftheworldsleadingmonarchresearchers,includingLincolnBrowerofSweetBriarCollege,independentbiologistBillCalvert,andOrleyChipTayloroftheUniversityofKansas.Puttingthemonarchphenomenonintoperspective,Taylorsays,YouvegotabutterflythatsoriginatinginToronto,oritsoriginatinginDetroit,Michigan,oritscomingdownfromSt.PaulormaybeevenWinnipeg,anditsmovingsouth.SomehowitfindsitswaytoMexico.Couldyoudothat?Nooneyetknowshowthebutterfliesdoit,butTaylorsresearchrevealsthattheyareexpertnavigators.Inoneexperiment,hetransportedMexico-boundmonarchsfromKansastoWashington,DC,andthensetthemloose.Atfirst,theyflewsouthasiftheywerestillinKansas—acoursethatfromWashingtonwouldmissMexicoentirely.Butafterafewdays,theycorrectedtheirflightpath,asifsomeinbornGPSunithadalertedthemtothetruedirectionoftheirdestination.Inanothersequence,NOVAaccompaniescelebratedmonarchwatcherBillCalvertaroundbackcountryTexasashelooksforsignsofthemonarchmigration.Sureenough,theyshowupenmasseandontime,headingtowardtheSierraMadremountainsacrosstheborder—thelastlegoftheirflight.AndintheMexicanstateofMichoacán,NOVAjoinsmountainvillagersastheycelebratethearrivalofthemonarchsinthefirstweekofNovember.ThebutterfliesarrivalmarksthestartofacelebrationcalledtheDayoftheDead,sincethelocalpeoplehavetraditionallyassociatedthemonarchswiththereturningsoulsoftheirdepartedancestors.Unfortunately,illegalloggingintheMexicanbutterflysanctuariesthreatenstheuniquehabitatthatmonarchsdependonfortheirsurvival.Monarchsmaynotyetbeanendangeredspecies,buttheirannualmigrationisanendangeredphenomenonthatcoulddwindletoinsignificanceifthegiantfirsthattheyclingtoduringthewinterdisappear.Gonealsowouldbethecolorfulfestivalthatclosestheprogram—afireworksdisplaywelcomingthehardyflierstoMexico,withorangeburstsagainsttheblacksky,lookingalmostlikethebeautifulcloaksofthemonarchs..21世(🌍)纪中期，由于温室效应，南北极冰川(💤)融化(🔳)，地球(📐)上很(hěn )多城市被淹没可是美丽的外表之下(🐷)，却(💜)是(🚳)以(yǐ )自我为绝对中心，睚(🤧)眦必报，自私(😧)自利，甚至(🌏)日行一恶(👣)的恶魔本质。仅仅只是(🈷)一秒(🔕)，他背(bèi )后(hòu )的女人(😖)，也就是吴池(👂)的前女友，柳如(rú )烟便(🌱)‘噗通一声跪(🛣)(guì )在了地上。只有原石里面啥都没有的人，才(cái )是(⭕)亏(kuī )大了。那我们什么时候可(📁)以过(guò )去？谢婉筠(🈵)连忙(máng )道，需要办签证？签证需(xū )要(🦂)多久？(🦔)原来近(🏰)期湖底的地壳发生变(🌳)动，一群在史前时代因火山爆发而被困在湖底的恐(kǒ(🗯)ng )怖食(shí )人(rén )鱼重(🀄)(chó(💍)ng )返人(🈴)间，它们纷纷向(🛌)毫(háo )无防(fá(🕵)ng )备的人(🍧)类发起(qǐ )猛烈攻击。《黎明前的战斗(dòu )》是对于1945年5月(🛍)布(bù )拉(🚬)(lā )格(📸)人民(🌇)对抗德(🍌)国法西斯的战斗的一部具有高(🔲)度艺术性的歌颂影片英俊沉稳的威尔（克(🛀)里夫(fū(🏅) )·欧(🙊)文CliveOwen饰）和妻(🚕)子(🏣)林(🕓)恩（凯瑟琳·基纳CatherineKeener饰）(🍑)还有青春期(qī )的(🌏)女儿(🍥)安妮（丽亚娜(nà )·(👿)莱伯拉托LianaLiberato饰）一(⬛)起住在一个(gè )太平的(🈹)社(shè )区，事业(yè(🥌) )一帆(fān )风顺，生(shē(🍧)ng )活安(🍶)稳而美满(mǎ(🍯)n )，是一个(🌱)令人羡慕的幸福家庭(tíng )。