英语听力文摘 English Digest 655 富兰克林与他的毛皮实验

Ben Franklin And A Very Furry Situation When they hear the name Ben Franklin, many folks think of the Declaration of Independence, the Continental Congress and things like that. Not as many people remember that Franklin was an inventor . . . and a go

英语听力文摘 English Digest 653 冰河时代的植物存活到现在

Ice Age Plant Survives To Modern Day Like a science fiction time traveler, an arctic plant of the late Pleistocene age, over thirty one thousand years old, is growing again after a long frozen sleep. History Narrow leafed campion (Silene stenophylla)

英语听力文摘 English Digest 651 为何会形成黑眼圈

Why Do Dark Circles Form Under My Eyes? Its eleven oclock Sunday morning, and youve just woken up after a late night of carousing. You stumble out of bed, brace yourself on the bathroom sink and blink into the mirror. 图片1 There, under your eyes,

英语听力文摘 English Digest 650 什么是脑震荡

What Is A Concussion? If you follow football, hockey, soccer, or boxing, then you know that athletes in these and other contact sports are at constant risk for a concussion. Every season several football players miss a number of games after absorbing

英语听力文摘 English Digest 649 从科学角度来说什么是厌倦？

What Is Boredom, Scientifically Speaking? Its time to go again to the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Everyone gets bored from time to time. But I was wonderingwhat is boredom exactly, scientifically speaking

英语听力文摘 English Digest 648 科学家如何研究致命的疾病

How Do Scientists Study Deadly Diseases? I have a trivia question for you, Don. What do the Ebola virus, anthrax, and the avian flu have in common? 图片1 Researching Disease After all, theyre some of the most dangerous, deadly diseases around. On t

英语听力文摘 English Digest 647 水泡是什么？

What Are Blisters? Remember that hit song from the 80s that featured the chorus: And I would walk five hundred miles / and I would walk five hundred more / Just to be the man who walks a thousand miles / to fall down at your door? What sounds romanti

英语听力文摘 English Digest 625、外星球上有生命吗？

Is There Life On Other Planets? Weve all been hearing about ongoing Mars exploration, and how water probably used to be abundant there. And a water spewing volcano was recently discovered on a small moon orbiting Saturn. Water is one sign that life m

英语听力文摘 English Digest 661 月球表面的记号为何不会消失

Why Dont Marks On The Surface Of The Moon Disappear? In 1969 when Neil Armstrong said Thats one small step, he made a lasting impression. On the moon, that is. Marks on the surface of the moon dont disappear the way marks on the Earth do; a great exa

英语听力文摘 English Digest 660 生病的时候为何会脱水

Why Do You Become Dehydrated When Sick? When you have a cold or flu, the doctor (or Dr. Mom) may tell you to drink lots of fluids. But did they ever explain why you need to guzzle all that water and juice? The extra fluid helps prevent dehydration, w

英语听力文摘 English Digest 657 为什么我还饿？

Why Am I Still Hungry? Youve just snacked on rice cakes. Why are you still hungry? That yummy feeling of being pleasantly full depends partly on the weight and volume of what you eat. As the stomach churns away at a large enough weight and volume of

英语听力文摘 English Digest 654 为什么莴苣不能冷冻

Why Lettuce Should NOT Be Frozen Stroll through the frozen foods section of the supermarket and youll find frozen corn, peas, and beans. A Moment of Science wonders, why isnt there any frozen lettuce? 图片1 Why Cant I Freeze Lettuce? Freezing is a

英语听力文摘 English Digest 621、哭的时候为什么会流鼻涕？

Why Does Crying Make Your Nose Run? When you burst out crying, you expect the bleary red eyes and the rivers of tears that stream down your cheeks. But on top of all that, your nose starts to run like a faucet. Why does this happen? Whats the connect

英语听力文摘 English Digest 611、为什么我们想要吃零食？

Why Does My Body Want To Snack? 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 snack attack is harder on your

英语听力文摘 English Digest 594、为什么埃及艳后要化妆？

Why Did Cleopatra Wear Makeup? Over five thousand years ago, the ancient Egyptians used eye shadow, not only for cosmetic but practical purposes as well. Dark pigment painted around the eye helped protect the eye from the bright midday sun glaring of

英语听力文摘 English Digest 591、蜂蜜为什么不会变坏？

Why Doesnt Honey Spoil? If you havent cleaned out your refrigerator in a while, there might be a nasty surprise waiting for you. There, in a forgotten piece of Tupperware, lurks the ravioli you didnt finish three weeks ago. Opening the lid with curio

英语听力文摘 English Digest 644 蟑螂实际上有用吗

Are Cockroaches Actually Useful? The natural History of the Cockroach, on this Moment of Science. For certain species of cockroach, humans make the perfect roommates. Why do cockroaches like living in our houses? And what do they do when theyre not b

英语听力文摘 English Digest 643 把牛奶从鼻孔吹出来

Blowing Milk Out Of Your Nose Remember back in grade school sitting at the lunch table when someone cracked a joke just after you took a swig of milk? As you laughed milk spurted out your nose and sprayed everyone around you. Now thats entertainment.

英语听力文摘 English Digest 641 什么引起你嗓子哽咽？

What Causes A Lump In Your Throat? Oftentimes when we cry, we feel a lump in the throat. Does a lump actually form, or is there some other explanation? 图片1 Explanation The lump-like thing we feel when overcome by emotion has to do with how the ne

英语听力文摘 English Digest 640 致命的花生

Death By Peanut Peanuts are one of the worlds most nutritious foods. Peanuts contain pound for pound more protein, vitamins, and minerals than beef liver and more fat than heavy cream. For approximately .5% of Americans, however, peanuts are not so b