Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
A night spent camping on the sand dunes of this three-million year old desert, watching the sky change colors at dusk, is a dream come true for any nature lover.
如果晚上露营在这个有三百万年历史的沙漠上，看着天空随着傍晚的来临不断变幻，如同梦境。
What we found in this 52 million year old amber is that the insects contained in it already show close connections to European fauna of almost the same time.
在这块5200万年前的琥珀中我们发现里面包着的昆虫已经跟同时期的欧洲动物群有了紧密的联系。
As described in a September 17 Science article co-authored by Brusatte, tyrannosaurs came in a wide range of sizes, shapes and habits over their 100 million year history.
9月17日发表在《科学》杂志上的一篇文章认为，在一亿年的进化历史中，暴龙科的体型、外表和习性都发生了巨大的改变。
The number of couples getting married also increased last year, with 9.45 million marriages registered nationwide, an increase of 1.2 million year on year, the report said.
去年，全国的结婚数量也有所上升，登记结婚数达到945万例，比去年同期增长120万例。
Paleontologists found that amongst the 39 million year old fossils there were three distinct families of anthropoid primates, all of whom lived in the area at approximately the same time.
古生物学家发现，在这些三千九百万年前的古老化石中，有三个特征不同的类人猿家族，它们都在同一时期生活在这一地区。
He came across the jawbone of a 4.5 million-year-old marsupial.
他偶然发现了一个450万年前的有袋动物的颌骨。
One interpretation regarding the absence of fossils during this important 100-million-year period is that early animals were soft-bodied and simply did not fossilize.
关于在这一亿年的重要时期中没有化石，有一种解释是，早期的动物是软体动物，根本不会变成化石。
One interpretation regarding the absence of fossils during this important 100-million-year period is that early animals were soft bodied and simply did not fossilize.
在这重要的一亿年的周期内缺乏化石（记录），关于这一点，有一种解释是早期的动物是软体动物，所以它们无法形成化石。
This 700-million-year-old formation gives few clues to the origins of modern animals, however, because paleontologists believe it represents an evolutionary experiment that failed.
然而，这个7亿年历史的地层几乎不能为现代动物的起源提供任何线索，因为古生物学家认为它代表的是一个失败的进化试验。
To help solve this mystery, scientists went on an ocean expedition to drill into a large, 145-million-year-old underwater supervolcano.
为了解开这个谜，科学家们进行了一次海洋探险，去钻探145亿年前就在水下存在的超级火山。
At the same 65-million-year depth, the geologic record reveals that a thin layer of iridium was deposited pretty much everywhere in the world.
地质记录显示，在65万年前地球上同一深度的地层，世界各地都有一层薄薄的铱层存在。
Using conventional drilling methods, it will take three summer seasons in the remote reaches of Antarctica to get to the million-year-old ice that the teams hope lies 3000 metres down.
用传统的钻冰方式，将会花掉三个暑天来获取遥远南极的冰芯，它们预期位于地下3000米深的冰层里。
This may have been triggered by a 250-million-year lull in volcanic activity, which would have meant less carbon dioxide being pumped into the atmosphere, and a reduced greenhouse effect.
这可能是长达2.5亿年的火山活动间歇所引发的，那意味着更少的二氧化碳被排放到大气中，温室效应也降低了。
If two-million-year-old A. sediba is indeed the true ancestor of Homo, how could it give rise to those even older fossils assigned to Homo in Bill Kimbel's shoe box?
如果距今200万年的南方古猿源泉种确实是人属的真正祖先，它怎么可能繁衍出比尔·吉姆贝尔（威廉·吉姆贝尔？） 鞋盒子中距今历史更长的化石人属？
The 125-million-year-old species Sinosauropteryx, for example, has bristles on its skin, and scientists found melanosomes in the tail bristles.
例如一亿二千五百万年前存活在世的中华龙鸟种群，全身长满刚毛，科学家们从它们尾部的刚毛处发现存在有黑素体。
Scientists have found a 67 million-year-old fossil of a snake coiled around dinosaur eggs and a hatchling.
科学家在一块6700万年的化石中发现了一条蛇盘绕在恐龙蛋和一只幼仔周围。
Researchers made this connection after discovering a 380-million-year-old female specimen that still retained a single embryo connected by an umbilical cord.
研究人员在发现了一个3.8 亿年前的标本还保有一个连着脐带的胚胎，由此得出了这一结论。
But its early promise faded amid a series of spectacular but unfounded claims, such as supposed 80-million-year-old dinosaur DNA that was actually from a human.
但早期的期望消失在一系列轰动一时但毫无根据的说法当中，如被认为8千万年的恐龙dna却是来自于人类。
Back in 1995, he extracted it from a 45 million-year-old fossil.
1995年，他从一块四千五百万年前的化石中提取了这种微生物。
They determined, for example, that a 47-million-year-old feather had the dark iridescent sheen found on starlings today.
举个例，他们根据现存的星椋鸟的毛色确定了一片有4.7亿年的羽毛有暗彩色光泽 。
The pigments preserved in fossils, including a 120 million-year-old bird, have been revealed using X-rays.
我们用X射线研究保存在化石中的色素，包括一只1200万年前的鸟类。
RACE is on to retrieve the first million-year-old sample from deep within Antarctica's ice.
一场在南极冰层中取回第一枚100万年前冰芯样品的比赛正式拉开了帷幕。
The duality of the not-quite-teenage boy and the 260-million-year-old mountain in the same shot absolutely amazed me. (Photo and caption by Quinn Ballard)
一位不满十岁的男孩与260万年前的桌山出现在同一张照片上着实让我惊讶。
This eastern collared lizard was posing on a 225-million-year-old petrified tree trunk.
东部的领蜥蜴在有2.25亿年历史的石化树干上摆好了拍照的姿势。
Two 1.9 million-year-old skeletons found in a South African cave have added a new and intriguing member to the primate family.
在南非一个洞穴中发现的两具距今190万年的骸骨，为灵长类这个大家族增添了一个引人入胜的新成员。
It also introduces the 10 million-year project to find the Ultimate Question.
这一集还介绍了寻找终极答案的千万年计划。
With the discovery of Ardi (above), 3.2-million-year-old fossil Lucy is no longer the oldest hominid skeleton known.
阿尔迪的发现(上图)，让距今320万年的露西化石不再是已知最早的人类遗骨。
With the discovery of Ardi (above), 3.2-million-year-old fossil Lucy is no longer the oldest hominid skeleton known.
阿尔迪的发现(上图)，让距今320万年的露西化石不再是已知最早的人类遗骨。
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