万物简史 第425期:生命的起源(19)
But about 3.5 billion years ago something more emphatic became apparent. 但是，大约在35亿年前，更加坚强的东西变得显而易见。 Wherever the seas were shallow, visible structures began to appear. 只要哪里的海水很浅，可见
万物简史 第426期:生命的起源(20)
This was most unexpectedso unexpected, in fact, that it was some years before scientists realized quite what they had found. 这完全是出乎意料的事太出乎意料了，因此科学家们实际上过了几年才充分意识到自己的发现。
万物简史 第427期:生命的起源(21)
It has been suggested that the cyanobacteria at Shark Bay are perhaps the slowest-evolving organisms on Earth, and certainly now they are among the rarest. 据认为，沙克湾里的叠层石也许是地球上进化最慢的生物，也肯定是现在
万物简史 第428期:生命的起源(22)
Mitochondria manipulate oxygen in a way that liberates energy from foodstuffs. 线粒体支配着氧，释放食物中的能量。 Without this niftily facilitating trick, life on Earth today would be nothing more than a sludge of simple microbes. 没有
万物简史 第429期:生命的起源(23)
Compared with the new eukaryotes the old prokaryotes were little more than bags of chemicals, in the words of the geologist Stephen Drury. 地球已经朝着真正有意思的行星迈出了第一步。与新的真核细胞相比，旧的原核细胞借
万物简史 第430期:小生物的世界(1)
20 Small World 第二十章 小生物的世界 It's probably not a good idea to take too personal an interest in your microbes. 要是你对身边的微生物过于在意，这很可能不是个好习惯。 Louis Pasteur, the great French chemist and
万物简史 第431期:小生物的世界(2)
Every human body consists of about 10 quadrillion cells, but about 100 quadrillion bacterial cells. 每个人体大约由1亿亿个细胞组成，但它却是大约10亿亿个细菌细胞的寄主。 They are, in short, a big part of us. 总而言之，
万物简史 第432期:小生物的世界(3)
Bacteria do it all the time without fuss, and thank goodness, for no larger organism could survive without the nitrogen they pass on. 而细菌一直在不慌不忙地干这件事。谢天谢地，要是没有它们来传送氮，大的生物就活不下
万物简史 第433期:小生物的世界(4)
With this ability to evolve rapidly goes another, even scarier advantage. 有了这种能力，另一种更加吓人的优势会很快产生。 Bacteria share information. Any bacterium can take pieces of genetic coding from any other. 细菌能共享信
万物简史 第434期:小生物的世界(5)
They have been found living in boiling mud pots and lakes of caustic soda, deep inside rocks, at the bottom of the sea, 我们还发现细菌生活在沸腾的泥潭里和烧碱池里，岩石深处，大海底部， in hidden pools of icy water in t
万物简史 第435期:小生物的世界(6)
We now know that there are a lot of microbes living deep within the Earth, many of which have nothing at all to do with the organic world. 我们现在知道了，有大量微生物生活在地球内部的深处，其中许多与普通的有机世界毫
万物简史 第436期:小生物的世界(7)
In 1997 scientists successfully activated some anthrax spores that had lain dormant for eighty years in a museum display in Trondheim, Norway. 1997年，科学家们成功地激活了已经在挪威特隆赫姆博物馆休眠了80年之久的一些炭疽
万物简史 第437期:小生物的世界(8)
In 2001, a team from Tel Aviv University argued that B. permians were almost identical to a strain of modern bacteria, Bacillus marismortui, found in the Dead Sea. 2001年，以色列特拉维夫大学的一个小组认为，二叠纪芽孢杆菌与一
万物简史 第438期:小生物的世界(9)
Many organisms in the visible world were also poorly served by the traditional division. 传统的分类法也不大适用于可见世界里的许多微生物。 Fungi, the group that includes mushrooms, molds, mildews, yeasts, and puffballs, were ne
万物简史 第439期:小生物的世界(10)
When times are good, they exist as one-celled individuals, much like amoebas. 当年景好的时候，它们以单细胞的形式独立存在，很像是变形虫； But when conditions grow tough, they crawl to a central gathering place and become,
