If you wipe a finger across a household surface that hasnt been cleaned in the last few days, chances are youll come into contact with dust. Look around and youll find the stuff everywhere, from the particles floating in a sunbeam to the fine layer o

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英文书摘精选 The Science Of The Siesta午休的学问

When you go back to work or class after lunch, why is it so hard to stay awake? 当我们用完午餐回去工作或上课时，为什么很难保持清醒呢？ Although we get energy from food, we also use lots of energy to digest it. Your energy u

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英文书摘精选 How The Mississippi Changes Its Course密西西比河如何改道?

Did you ever hear the saying, its easier to get the Mississippi to change its course than get a stubborn child to change his mind? I guess whoever made this one up didnt know that the Mississippi actually does change its course about every thousand y

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英文书摘精选 How To Find A Tasty Tomato如何挑选美味番茄

Most of us have had the same experience. We see a big, red tomato in the grocery store, take it home for our salad, and find out that it tastes like cardboard. 大多数人都有过这样的经历，从商店里挑选出又大又红的番茄回去做沙

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英文书摘精选 How Does Ice Cool Drinks?冰块是如何使饮料冷却的?

Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然：室温下把一些冰块放入水中，

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英文书摘精选 How Similar Are Humans And Chimps?人类和猩猩有多相似?

Dear A Moment of Science, 亲爱的《科学一刻》栏目组： I know that humans and chimps share something like 98 percent of our DNA. But what does this really mean? At least on the surface, humans and chimps seem very different we live in hous

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英文书摘精选 How Does The Body Make Blood?人体如何造血?

If blood didnt circulate through our bodies, carrying oxygen and nutrients, we wouldnt be able to live. Blood is so important to life that the body constantly makes new blood. 如果血液不能在我们身体内循环，为人体输送氧气和营养，

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英文书摘精选 Parents Model Healthy Eating父母引导健康饮食

It should come as no surprise that the more stressed parents are at work, the greater the burden on their family. Its also probably not a surprise that this dynamic can negatively affect a familys nutrition. After all, the more time parents spend wor

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英文书摘精选 Create Your Own Moon Craters制造属于你自己的月球陨石坑

What makes science really fun is when you get to do things yourself, so today were going to be making moon craters. 科学真正变得有趣的时刻就是当你亲自实践的时候，那么今天，让我们来一起制作月球陨石坑吧！ They

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英文书摘精选 The Mysterious Liquid In Yogurt酸奶中的神秘液体

The Mysterious Liquid In Yogurt酸奶中的神秘液体（双语） When you open a container of yogurt, youll often see liquid collected on top. Some people mix it back into the yogurt, and others drain it off. What is it, and where does it come fro

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英文书摘精选 The History Of Smallpox天花的历史

The History Of Smallpox天花的历史（双语） In Shakespeares day, wishing a pox on someone was a terrible curse. Ten percent of the population in 17th century London died gruesomely of smallpox, a virus spread easily by airborne particles or co

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英文书摘精选 Why Does My Body Want To Snack为什么我们想要吃零食

Why Does My Body Want To Snack?为什么我们想要吃零食? Sometimes a snack quiets your growling stomach. But sometimes you just feel like munching, even though youre not really hungry. French researchers recently found that this second type of

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英文书摘精选 Parents May Be Happier Than Childless Couples有孩子的夫妻家庭更幸福

Parents May Be Happier Than Childless Couples有孩子的夫妻家庭更幸福 Dear A Moment of Science, 亲爱的《科学一刻》栏目组， Im a parent of two young kids. Its challenging, but overall a very rewarding experience. Yet I keep heari

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英文书摘精选 For a Longer Life, Go Running 跑步有利于长寿

For a Longer Life, Go Running 跑步有利于长寿 We all know that exercise is good for your health. But some kinds of exercise may be better than others. 我们都知道运动对健康有益。但有些运动可能比其它运动效果更好。 Ru

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英文书摘精选伟人传记06：获取完美品德

Attaining Moral Perfection 获取完美品德 In the various enumerations of the moral virtues I had met with in my reading, I found the catalogue more or less numerous，as different writers included more or fewer ideas under the same name. I propos

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英文书摘精选伟人传记05：热爱美食

Love for Good Eating 热爱美食 At supper Johnson talked of good eating with uncommon satisfaction. Some people, said he, have a foolish way of not minding, or pretending not to mind, what they eat. For my part, I mind my belly very studiously, and

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英文书摘精选 How People In Greenland Learn How To Count格陵兰岛人是怎样学会计数的

Kids learn to count on their fingers, because theyre so, well, handy! And it makes sensemost number systems originally developed as people counted using their fingers. 小孩通过数手指来学习计数，因为这样确实非常方便。由此，最

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英文书摘精选 What Is The Elevator Effect?何为电梯效应?

Todays program is about an effect that not only have we all witnessed, but have participated in. Havent we all been on an elevator and noticed that just about everyone stops talking when they get on? Why do we do that? You can be having a perfectly p

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Bacteria Loves Your Mouth 细菌钟爱你的嘴

Did you know that there could be more bacteria living in your mouth than there are people on earth? 你知道吗，寄居于你口中的细菌有可能比全世界的人口数还多？ Bacteria love our mouths because the livin is easytheres plenty o

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英文书摘精选 Can You Be Addicted To Chocolate?你能沉迷于巧克力吗?

As Robert Palmer sang in the mid 80s, You might as well face it, youre addicted to love. While that may or may not be true depending on who you are, its no secret that addiction is a common phenomenon. 80年代中期的罗伯特帕尔默曾经唱道：

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