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As you might expect, oxygen is our most abundant element, accounting for just under 50 percent of the Earth's crust, 你也许会想到，氧是最丰富的元素，占地壳的将近50%。 but after that the relative abundances are often surprising.
万物简史
We don't really know for sure because we have nothing else to compare our own existence to, 我们确实不知道，因为我们没有任何别的东西可以用来跟我们自己的存在进行比较。 but it seems evident that if you wish to end u
万物简史
Its surface temperature is a roasting 470 degrees centigrade (roughly 900 degrees Fahrenheit), which is hot enough to melt lead, 它的表面温度高达470摄氏度，连铅都会熔化。 and the atmospheric pressure at the surface is ninety times
万物简史
So far space scientists have discovered about seventy planets outside the solar system, 据认为，外层空间有10亿亿亿颗行星。 out of the ten billion trillion or so that are thought to be out there, so humans can hardly claim to speak wit
万物简史
On land, if you rose to the top of a five-hundred-foot eminenceCologne Cathedral or the Washington Monument, say, 在陆地上，要是你爬到150米的高处比如科隆大教堂或华盛顿纪念碑， the change in pressure would be so slight as
万物简史
Part V Life Itself 第五部 生命本身 The more I examine the universe and study the details of its architecture, 我越是审视宇宙，越是研究其构造上的具体细节， the more evidence I find that the universe in some sense must have
万物简史
We have absolutely nothing to compare it to. 我们绝对没有任何东西可以用来与它比较。 The biggest blast in recent times was that of Krakatau in Indonesia in August 1883, 近代最大的一次是1883年8月印度尼西亚的喀拉喀托
万物简史
Eighty million tons of rock, moving at more than one hundred miles an hour, just fell off the mountain, 8000万吨岩石以每小时160公里的速度从山上崩塌下来， traveling with such force and momentum that the leading edge of the landsli
万物简史
The ash fall from the last Yellowstone eruption covered all or parts of nineteen western states (plus parts of Canada and Mexico), 上一次黄石火山爆发所喷出的火山灰，铺满了西部19个州的全部地区或部分地区（加上加拿大
万物简史
Such plumes are not all that rare. 这样的热柱并不少见。 There are about thirty active ones on the Earth at the moment, and they are responsible for many of the world's best known islands and island chains, 眼下，地球上大约有30处活热
万物简史
Imagine a pile of TNT about the size of Rhode Island and reaching eight miles into the sky, to about the height of the highest cirrus clouds, 想像一下，有一堆TNT，面积相当于英国的一个郡，伸向13公里高的天空，达到了最高
万物简史
15 Dangerous Beauty 第十五章 美丽而危险 In the 1960s, while studying the volcanic history of Yellowstone National Park, 20世纪60年代，美国地质勘测局的鲍勃克里斯琴森在研究黄石国家公园火山史的时候， Bob Chri
万物简史
Tokyo stands on the boundary of three tectonic plates in a country already well known for its seismic instability. 日本已经是个以多地震闻名的国家，而东京恰好又位于三个构造板块的相遇之处。 In 1995, as you will remem
万物简史
The scale is of course more an idea than an object, an arbitrary measure of the Earth's tremblings based on surface measurements. 当然，里氏震级是一个概念，不是一件东西，是一个根据地面测量的结果武断地得出的地球震
万物简史
The distance from the surface of Earth to the center is 3,959 miles, which isn't so very far. 从地面到地心的距离为6370公里。这不算太远。 It has been calculated that if you sunk a well to the center and dropped a brick into it, 有人
万物简史
Walter was a geologist specializing in paleomagnetism, Luis was a physicist and I was a nuclear chemist. 沃尔特是地质学家，他的专长是古磁学；路易斯是物理学家；我是核化学家。 And now here we were telling paleontologis
万物简史
Chicxulub is buried under two to three kilometers of limestone and mostly offshore, 奇克休留布大坑在两三公里的灰岩深处，而且大部分在近海。 which makes it difficult to study, Anderson went on, while Manson is really quite ac
万物简史
Even among paleontologists it was not unknown. 即使在古生物学界，也不是没有这种看法。 In 1956 a professor at Oregon State University, M. W. de Laubenfels, writing in the Journal of Paleontology, 1956年，俄勒冈州立大学教授
万物简史
Pick up a pebble from a Massachusetts beach, and its nearest kin will now be in Africa. The Scottish Highlands and much of Scandinavia are substantially American. Some of the Shackleton Range of Antarctica, it is thought, may once have belonged to th
万物简史
What Shoemaker and his colleagues found was that there was more risk out therea great deal morethan anyone had ever imagined. 苏梅克和他的同事们发现的是，外层空间存在着比想像的还要多多得多的危险。 Asteroids, as most
万物简史