Wheredidwecomefrom?Whatmakesushuman?Anexplosionofrecentdiscoveriesshedslightonthesequestions,andNOVAscomprehensive,three-partspecial,BecomingHuman,examineswhatthelatestscientificresearchrevealsaboutourhominidrelatives.Part1,FirstSteps,examinesthefactorsthatcausedustosplitfromtheothergreatapes.TheprogramexploresthefossilofSelam,alsoknownasLucysChild.PaleoanthropologistZerayAlemsegedspentfiveyearscarefullyexcavatingthesandstone-embeddedfossil.NOVAscamerasaretheretocapturetheunveilingoftheface,spine,andshoulderbladesofthis3.3million-year-oldfossilchild.AndNOVAtakesviewersinsidetheskulltoshowhowourancestorsbrainshadbeguntochangefromthoseoftheapes.Whydidleapsinhumanevolutiontakeplace?FirstStepsexploresaprovocativebigideathatsharpswingsofclimatewereakeyfactor.霍仙姑咬着下唇，轻(🐰)哼一声，然后(⏯)便(🌺)欺(👹)了(👸)上来(lá(⛪)i )。糜贞红着脸，偎在夏(😚)侯昭怀(📺)中，含羞点头这样下去不是个办(🥜)法(fǎ )，必须(❕)想办法阻止(zhǐ )他(📲)继续向(xiàng )上爬，陈天(🛒)豪对着陈(chén )二几个人说道：你们(men )去找几个大的石头搬到这边来(🤾)，越大(dà )越好。韩雪(🆑)想到重生(shēng )前，所发生的事情，眼泪怎么也(yě )忍(rěn )不(bú )住的留(liú )下来了。今天看到杨璇(xuá(🕷)n )儿，张采萱突然(💚)想起几次遇上(✴)她(tā(👜) )时(shí )的与众不同来(😏)，这才出(🥍)言(💝)试探。容隽在(🍞)一派祝福(🥥)声(👊)中去(🚔)找(🥔)贺靖(😭)忱，却发现那家伙不知道什么时候已经不见(😊)(jiàn )了——你(nǐ )是觉得我(📆)现在不能动，就能(néng )任(🐬)你为所(🖋)欲为，是(🌃)吗(🛳)？霍(🎄)靳西看(🤽)了一眼自己手臂上被(💱)她留下的(de )牙印(🏩)，缓缓开(🛌)口道。只不过完(wá(😃)n )美总(🤖)是可遇(🎽)不可求的事情(🐬)，在(㊙)事业上顺风顺水、目标远大(dà(🔇) )的陈，感(gǎn )情生活则一(yī )直空窗，只因(⛄)其性(xìng )格(gé )的原(🐌)因令(lìng )心仪的(🈸)另一半迟迟(👚)(chí )不曾路面。