U1Inthe1800s,theRockyMountainlocustbroughtmassivedestructiontowesternsettlers.Then,theinsectssuddenlydisappeared---almostwithoutatrace.Nowscientistshopetofindareasonforthelocust’sextinction.WhatcausedtheRockyMountainlocusttodisappear?Ascientist,Dr.Lockwoodfindstheanswer.Hespentoveradecadeinvestigating.HeexplainsthatitwashumanswhowereinfactresponsiblefortheextinctionoftheRockyMountainlocust.Moreandmorefarmsappearedintherivervalleystofeedtheminers.Forworkingontheland,thefarmersplowedupthefieldsandtherebystampedoutthedelicateeggsthathadbeenlaidbythegreatswarm.Bynotallowingtheeggstomatureintofull-grownlocusts,thespecieswasentirelydestroyedwhenitwasatitsweakestwhentheinsectswerejusteggs.Theonlyextinctionofapestspeciesinagriculturalhistorywasinfactanaccident.落基山脉的蝗虫给西方殖民者带来了巨大的破坏.然后,昆虫突然消失了---几乎没有一个痕迹.什么导致了落基山山脉蝗虫的灭绝?一位科学家,DR.找到了答案。他花费了十多年的时间调查。他解释道是人类是落基山蝗虫灭绝负责。随着越来越多的农场出现在河谷中。在工作过程中的土地上,农民耕种的田地,从而杜绝了因大群奠定了精致的蛋。在那些未孵化的卵是落基山蝗虫的最后一代人。通过不让鸡蛋成熟到完全成熟的蝗虫,该物种被完全摧毁时,它是在其最弱的时候,昆虫只是鸡蛋。在农业历史上唯一的一个害虫物种灭绝,实际上是一个事故。U2Humboldtsquids,or“Reddevils”,aresomeoftheworld’slargestanimalswithoutabackbone.ThesesometimesdangerouscreaturesliveinthedeepwatersofPacificOcean.Theyarefierceenoughtoattacksharks,andwhendisturbedorthreatened,they’vebeenknowntobeaggressivetowarddeep-seadivers.Aresearcher,GillyandaprofessionaldiverhavecometotheGulfofCaliforniatolearnmoreaboutthem.Theyhavedoneaninterestingexperiment:filmingthesquidusingredlight.Theyobservedhowthereddevilshunttheirprey:They’recominginatfullspeedahead,grabtheprey,andfullspeedreverse.Andleavethelink.Theyhaveincredibleintelligence.SeeingtheattackbehavioroftheHumboldtsquidhashelpedGillytofurtherunderstandsomethingimportantaboutcreaturesthathe’sstudiedforsomanyyears.洪堡特的鱿鱼,或“红魔”,是世界上最大的动物没有骨骼。这些有时危险的生物生活在太平洋的深水中。他们是凶猛的攻击鲨鱼,当受到干扰或威胁时,他们一直被称为是攻击深海潜水员。一名研究人员gilly和一名专业潜水员来到加利福尼亚湾,以了解他们更多。他们做了一个有趣的实验:用红色的光拍摄鱿鱼。他们观察到了红魔鬼如何追捕他们的猎物:他们在全速前进,抓住猎物,全速反转。喷墨离开。他们有令人难以置信的智慧。看到洪堡特鱿鱼的攻击行为,帮助科学家进一步了解一些重要的生物,他已经研究了这么多年。U3RunningfromParistoIstanbul,theOrientExpressisafirst-classhotelonwheels.Onceayear,travelerscanridetheluxurytrainacrossEuropejusttoenjoythesix-dayjourney.Passengerscomefromallpartsoftheworldandmanyaretakingthisspecialtripbecausethey’recelebratingaspecialorprivateoccasion.It’shardworktomakethegrandtrainrunsmoothly.AndthestaffoftheOrientExpressknowsallaboutprovidingfirst-classservicesincemostofthemhavealsoworkedinEurope’sfinesthotelsandrestaurants.ThepeoplewhotravelandworkontheOrientExpresshaveawindow-seatviewofEuropepassingbeforetheireyesandacloseupofabygoneerasurroundingthem.Whenitcomestoromanceandadventurewhiletravelinginstyle,itseemsthatnoneofthemoderntraveloptionsoftodaycancomeclosetoaromanticrideontheOrientExpress.从巴黎到伊斯坦布尔,东方快车是一家一流的车轮上的酒店。一年一次,旅行者可以乘坐豪华列车穿越欧洲只是为了享受六天的旅程。乘客来自世界各地,许多人正在参加这次特别的旅行,因为他们正在庆祝一个特殊的或私人的场合。这是艰苦的工作,使火车运行平稳。并且东方快车的工作人员都知道提供一流的服务,因为他们大多数也在欧洲最好的酒店和餐馆工作。旅行和东方快车上工作的人有一个靠窗的座位看欧洲通过在他们眼前和靠近一个旧时代的周围。当谈到浪漫和冒险,而旅行的风格,它似乎没有今天的现代旅行选项可以接近一个浪漫的乘坐东方快车。