标签：Digest 相关文章
Old Fashioned Ice Cream Makers Have you ever seen an old-fashioned ice cream maker? Nestled inside the wooden bucket, theres a metal canister with a hand crank on top. Cranking the handle scrapes the sweet, creamy mixture from the sides of the metal
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The Future Of Males Have you ever heard predictions that one day women will be able to have babies without men? It turns out that some species of the Whiptail lizard have figured out how to do this and completely eliminated the male sex. Females Clon
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What Causes Altitude Sickness? Anyone who has vacationed in the higher elevations of Colorado, such as Vail and Estes Park, will tell you altitude sickness can be a real problem. Loss of appetite, nausea, vomiting, weakness, dizziness, and difficulty
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The Science Of Acne Acne: the scourge of adolescence. Most people endure it at some point, and cant wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules that comprise the skin condition that affects over 80% of teenagers
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Nick:Hi everybody, this is Nick. Welcome to teaching series how do you say this in American English. Nick:大家好，我是Nick. Brad:大家好，我是Brad Nick:今天我们要讲的是中国老师非常非常常说的一句话叫做，你们呀下课
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How Insects Fight Bacteria And Parasites Imagine that youre an insect, and that youve fallen ill because some bacteria or parasites have invaded your body. If you want to make it to a ripe old bug age, your body will need to fight off these invaders.
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Math Hurts My Brain Why? Its time to go again to the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Im not a math person. In fact, anytime I have to deal with numbers, let alone solve an actual math problem??which, thankful
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Do Colors Have Smells? Have you ever heard the color blue? Or tasted the musical note F-sharp? For most people, in both cases the answer is no. But for some people blue has a particular sound or shape, and F sharp has a slightly sour taste. This unus
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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
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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
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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
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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
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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
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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
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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,
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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
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Ben Franklin Did Not Get Struck By Lightning Did Ben Franklin really discover electricity with a kite? Everybody has heard the famous story of how pioneering experimenterand part-time founding fatherBen Franklin tied a key to a kite string and flew t
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What Are Sulfites? Youve just opened a bottle of wine for dinner. On the label, you see these words: Contains Sulfites. What are sulfites? And what are they doing in your wine? 图片1 Chemical Compounds Sulfites are chemical compounds found naturall
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The Science Of The Siesta When you go back to work or class after lunch, why is it so hard to stay awake? Although we get energy from food, we also use lots of energy to digest it. Your energy use increases 25-50% as you digest a meal. With all that
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The Lithic Principle 我们生活的星球上自然法则是亘古不变的吗？我们人类是不是自我感觉太过于良好？ Time again for the mailbox.Let's see.Here:A Moment Of Science,I heard recently that if the laws of nature were change
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