标签：Digest 相关文章
Smart Wheels 未来智能轮胎 Ya?l: My car is stupid, Don. Don: What do you mean, Ya?l? Y：I turn the key, the engine ignites. I turn the steering wheel, the wheels move. And thats it! D: Well, what you expect? Thats how a car works. Y：I know, b
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Do Cats Eat Spiders? 猫吃蜘蛛吗？ Do cats eat spiders? Our answer? Yes, they do. And thats not all cats will eat. Cats, both domestic and wild, are obligatory carnivore s , meaning that they dont have the chemical tools in their bodies to acces
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Los Ant-geles 洛杉矶人和蚂蚁 If youve ever driven in LA, you know that people dont cooperate terribly well. Traffic jam s , folks cutting folks off, people shouting at you out their windows . . . its a real headache. Wed all do a lot betterat
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Get It? 明白了吗？ Did you ever wonder what occurs inside your body when something funny happens? What is this thing we have in our brains that makes us say ha-ha when someone slips on a banana? One way to find out is to watch the brain laugh. T
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DNA Wrath of Khan 成吉思汗疯狂的基因 Today, Afghanistan is a war-torn region, battled over by military forces and world-spanning empire s . Eight hundred years ago things were much the same. Only then, there was only one ruler: Genghis Khan.
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Boiling Water Under Boiling Clouds You may be surprised to hear that its actually easier to boil water on stormy days than it is when the weather is clear and sunny. Can you guess why? The reason is that the boiling point of water changes slightly in
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D: Oh, no, Yeal, it is starting to rain, and I left my ant farm outside.Now my ants would drown and die. Y: Come on, Don. I am guessing plenty of ants drown everytime it rains, which makes me wonder how do ground-nesting ants cope with rain? D: Actua
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Don: Hey, Yael, Have you heard? We've discovered two new oceans? Yael: Where? D: On Mars. Well, they aren't there any longer, but they were there a few billion years ago. Y: I thought scientists weren't sure if Mars had oceans or not. D: They weren't
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Dont Try This at Home! Heres a hypothetical scenario that is to remain hypothetical. In other words, dont do this. Okay. Youre cruising along a desert highway in your souped-up roadster, leaving the roadrunners in the dust. Unfortunately, you are not
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Remember seesaws? Those things were great. But there was often a problem. Suppose theres a big kid on one side and a smaller kid on the other side. The seesaw just stays in one position: big kid on the ground, smaller kid up in the air. No fun. After
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Reentry Heat [Why does a space shuttle get hotter on reentry than on liftoff?] 能想象航天飞机穿越大气层时受到摩擦产生的热量有多惊人吗？来一起听听吧。 M:Dolle,we now know that the space shuttle Columbia burned up whe
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Flutter Battle 你喜欢蝴蝶吗？你了解蝴蝶吗？有的人认为蝴蝶是非常绅士的物种，让我们一起去了解真实的情况吧。 'Flutter Battle' on today's A Moment Of Science. One thinks of nature as red in tooth and claw, as
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Nice Nest 雄孔雀开屏是为了向人类炫耀她无与伦比的美丽尾巴？呵呵，似乎我们有点自作多情了，雄孔雀可没有兴趣理睬人类，他不过是在向自己的意中人表达爱意。现在研究人员发现，雄性刺
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Before Satellite Images, Howd We Know Earth Turned Every 24 Hrs? 在我们有卫星行片以前，我们是如何知道地球一天二十四小时都在转动呢？去听听科学家的说法吧。 The earth turns on its axis every 24 hours or so wer
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How to Meet an Eligible Gnat 夏夜，蚊子的嗡嗡声常令人抓狂，但对异性蚊子来说这或许是甜蜜的情歌。美国康奈尔大学研究人员的最新研究发现，埃及伊蚊就是通过这些嗡嗡声上演着求偶二重奏。
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Floating Tin Foil 锡纸为一种涂上或贴以像银的膜状金属纸，多为银白色，实际上是铝箔。铝箔纸（Aluminium foil），亦作铝箔，在香港称之为锡纸，是一种用压平了的金属铝制造的工具，主要用于厨
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How Clouds Float 形成云彩的暖湿上升气流使得云彩能够漂浮在空中。一片普通云彩的含水量约为200只成年公象的体重之和。但云彩中的水分被分解为细微的水滴和冰晶，因而不会倾盆而下。即使是
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How Rocks Appear In Your Garden 岩石，是在地质作用下形成的矿物聚合体，其中海面下的岩石称为礁、暗礁及暗沙，由一种或多种矿物组成的，具有一定结构构造的集合体，也有少数包含有生物的遗骸
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Chronic Sinusitis 慢性鼻窦炎，亦称慢性化脓性鼻窦炎。常因急性化脓性鼻窦炎反复发作未能得到适当治疗所致。以多粘液或脓性鼻涕、鼻塞、头痛及嗅觉减退或消失为主要临床症状。现代西医学
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The Mathematical Marriage Predictor 伦敦:一位数学家说,他可以94%的准确率来预测某对新婚夫妇是否会享有长久的婚姻。西雅图华盛顿大学数学教授默里说他发明的两个公式基于一项为期10年对700对美国
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