文章列表

• 1.万物简史 第494期:多灾多难的生命进程(14)
• Earth has seen five major extinction episodes in its time the Ordovician, Devonian, Permian, Triassic, and Cretaceous, in that order and many smaller ...
• 2.万物简史 第493期:多灾多难的生命进程(13)
• For complex organisms, the average lifespan of a species is only about four million yearsroughly about where we are now. 对于复杂动物来说，一个物种的...
• 3.万物简史 第492期:多灾多难的生命进程(12)
• Unfortunately for the therapsids, their cousins the diapsids were also productively evolving, 兽孔目爬行动物的运气不佳，它们的表亲双孔亚纲在进化过程中...
• 4.万物简史 第491期:多灾多难的生命进程(11)
• But come we did, though reaching our present state of eminence has not of course always been straightforward. 但是，我们毕竟还是来了，虽然达到我们目前...
• 5.万物简史 第490期:多灾多难的生命进程(10)
• Dinosaurs, whales, birds, humans, even fish all are tetrapods, which clearly suggests they come from a single common ancestor. 恐龙、鲸、鸟、人甚至鱼...
• 6.万物简史 第489期:多灾多难的生命进程(9)
• Then, as now, dragonflies could cruise at up to thirty-five miles an hour, 当时和现在一样，蜻蜓能以每小时50多公里的速度飞行， instantly stop, hover, f...
• 7.万物简史 第488期:多灾多难的生命进程(8)
• By combining their isotope findings with other fossil residuespollen levels and so on, 把对同位素测量的结果和能够说明其他情况（如花粉浓度等）的别的化...
• 8.万物简史 第487期:多灾多难的生命进程(7)
• And how, you may reasonably wonder, can scientists know what oxygen levels were like hundreds of millions of years ago? 你也许有理由想知道，科学家们怎...
• 9.万物简史 第486期:多灾多难的生命进程(6)
• So competition was fierce. 于是，竞争很激烈。 There was also an omnivorous and unsettling new type of predator on the scene, 而且，出现了一种新的无所...
• 10.万物简史 第485期:多灾多难的生命进程(5)
• For all the trouble they take to assemble and preserve themselves, species crumple and die remarkably routinely. 尽管物种们费了九牛二虎之力聚集起来保...