英语听力文摘 English Digest 572、神奇的发光色彩？

A Magical Glow? Have you ever wondered why fluorescent colors, like you see in highlighters or clothing dyes, for instance,seem so much brighter than other colors? Its because they seem to reflect more light than they receive! It may sound like a mag

英语听力文摘 English Digest 573、帮助小孩减肥的最佳方法！

Whats The Best Way To Help Kids Lose Weight? Youve probably heard that something like a third of all kids in the United States are overweight or obese. And youve probably also heard or read about all sorts of possible solutions: getting rid of sugary

英语听力文摘 English Digest 574、饥饿的千层面！

Hungry Lasagna So you made lasagna last night, and it was delicious. You saved the leftovers by wrapping aluminum foil over the top of the pan, and putting it in the fridge. When you get hungry today, you go to look for that lasagna, but it looks lik

英语听力文摘 English Digest 575、性和暴力为什么常在一起？

Sex And Violence Did you ever stopped to wonder why sex and violence so often go hand in hand? How come nobody complains about violence and gardening, say, or sex and bowling? There may be a biological basis for this, as we can see when we look at ot

英语听力文摘 English Digest 577、如何判读自己身体在向上还是向下？

How Does Your Body Know Which Way Is Up? Your body uses three senses to keep you balancedto tell you whats up and down. One of the senses is your eyes. They tell you how youre oriented with the world around you. Then theres your body sense. Its the s

英语听力文摘 English Digest 578、什么是太阳能龙卷风？

What Are Solar Tornadoes? Large, Earth bound tornadoes are pretty impressive weather events. Those dark, giant funnel clouds inspire much awe and fear. But theyre nothing compared to so called solar tornadoes solar gases swirling in monstrous formati

英语听力文摘 English Digest 579、高压烹饪！

Cooking Under Pressure When you boil potatoes on the stove top, it can take half an hour to cook them til tender. But, when you boil them in a pressure cooker, instead presto, theyre ready in about five minutes. Whats the difference? What makes press

英语听力文摘 English Digest 580、什么是条件反射？

What Are Reflexes? If youve ever blinked at a sudden light, jerked your hand away from something hot, or jumped at a loud noise, then you know that these are not actions we consciously plan. Rather, they happen involuntarily. Such sudden, unconscious

英语听力文摘 English Digest 581、为何夜晚比白天平静？

Why Are Nights More Calm Compared To The Day? More often than not, the wind dies down at night after a blustery day. Where does the wind go? Why are nights generally more calm than days? The difference between calm nights and windy days is the sun. D

英语听力文摘 English Digest 582、保鲜膜的秘密！

Why Does Plastic Wrap Cling To Itself? What makes kitchen plastic wrap cling so maddeningly to itself, and so conveniently to the sides of bowls and plates? Plastic wrap clings for two reasons: its elastic and its sticky. That probably seems pretty o

英语听力文摘 English Digest 583、爆米花是健康的零食？！

Popcorn Makes A Perfect, Healthy Snack Dear A Moment of Science, I love to snack, but I also want to lose weight. The problem is, I really hate vegetables and fruit, at least as snack foods. I want something with a little salt, a little crunch. So ar

英语听力文摘 English Digest 584、X射线检测艺术品！！

How X-Ray Technology Is Helping Examine Millets Artwork In the 1840s, a new painting by Jean Francois Millet was unveiled in Paris. But, horror of horrors, no one seemed to like it! Some critics thought the images were too violent; others thought the

英语听力文摘 English Digest 585、不同年龄的蜜蜂有不同的分工！

Bees Have Different Jobs According To Their Age Bees take on different jobs in a bee hive according to their age. Many become food scouts when older, but not all scouts are the same. Some search for new flowers, while others fly to and from establish

英语听力文摘 English Digest 517、地球同步卫星（一）

A Stationary Satellite, part 1 Some of the best devices in science have been anticipated by science fiction writers years before they existed. Occasionally a writer comes up with an idea that can be put into practice within their lifetime! Such is th

英语听力文摘 English Digest 526、我的大脑是静止的还是动态的？

Is My Brain Static Or Constantly Changing? Scientists used to think that for all its complexity, the brain was pretty static. Once the brain matured, it essentially stopped growing and changing. And when neurons, or brain cells, were lost or damaged,

英语听力文摘 English Digest 525、对付艾滋有新招 ！

Glow In The Dark Cats, Monkeys, And HIV Have you heard the one about the jellyfish, the monkey, and the glow in the dark cat? Actually, its no joke: scientists are experimenting with ways to combat HIV and AIDS by injecting cats with genes taken from

英语听力文摘 English Digest 524、闪电有助于肥沃土壤！

Lightning Helps Fertilize The Soil Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs. Butthat nitrogen is not available to us directly from the air. The only way we can get nitrogen

英语听力文摘 English Digest 523、你能定位空中的飞机吗？

Why Is It So Difficult To Spot A Plane In The Air? How many times have you heard a jet plane going over, looked up to see it, but not been able to find it even though you were looking toward where the sound was coming from? Well, this moment of scien

英语听力文摘 English Digest 522、噪声污染让鲸鱼也hold不住了！

Noise Pollution Is Affecting Whales If a noisy neighbor is blasting music at all hours of the day and night, drowning out your phone conversations and interrupting your sleep, you can call the police. But what is a whale to do? Natural noise from wav

英语听力文摘 English Digest 521、锚应该抛多远？

Anchors Away, Me Boysbut How Far? Anchors away, me boys but how far? On this moment of science.What happens if you throw your anchor overboard and there isnt enough chain to reach the bottom? Does the anchor haul you down with it? This sounds a littl