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听力文摘：洛杉矶人和蚂蚁
If youve ever driven in LA, you know that people dont cooperate terribly well. Traffic jams, folks cutting folks off, people shouting at you out their windows . . . its a real headache. Wed all do a lot betterat least, wed all move through congestion
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听力文摘：新陈代谢到底是什么
What is metabolism really? Statements like he can eat a lot because he has a fast metabolism are somewhat misleading. 新陈代谢是什么？他很能吃是因为他新陈代谢很快像这样的说法有点误导我们。 Metabolism isnt about the
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听力文摘：千差万别的鸟蛋
Depending on the species, bird eggs can be any color ranging from chickens plain white to a robins blue, streaked, spotted, bright, pale, and anything in between. We take a look at some of the reasons this might be the case. 不同鸟类蛋壳的颜色
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听力文摘：猫吃蜘蛛吗？
Do cats eat spiders? 猫吃蜘蛛吗？ Our answer? Yes, they do. And thats not all cats will eat. Cats, both domestic and wild, are obligatory carnivores, meaning that they dont have the chemical tools in their bodies to access nutrients from plants
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听力文摘：天上那是什么?
In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collisions with space debris can be minoras in a shooting star on a summer nightor amazingly destructive,
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听力文摘：洗手的误区
Most people believe that regular hand-washing is the best way to prevent infections. And theyre right: hand-washing does prevent certain infections, but too much washing can actually help some infections along.Whats going on? 很多人认为经常洗手
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听力文摘：近亲之伤,后代之殇
Fans of classic movies will remember the famous dueling banjos scene in Deliverance, the story of four city friends who take an ill-fated boating trip down a backwoods Georgia river. As the friends set out, one of the friends challenges a local boy w
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听力文摘：论地球上最成功的物种
For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short. Scientists estimate that there are two-hundred and forty times
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听力文摘：为尿床"平反"
Never a happy topic, bed wetting is a very distressing problem for five to seven million American kids. If we cant explain why some people like to pick on these kids, can we at least shed some light on what causes bed wetting? 尿床可是个不愉快的
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听力文摘：可以救人的吸血蝙蝠
Anyone who reads gothic fiction will tell you that vampires are bad news. People who read modern medical journals, however, might disagreein fact, they think vampires just might help save lives. 读过哥特小说的人都会说吸血蝙蝠是个讨厌
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听力文摘：可乐的神奇清洁能力
Lets begin with a cleaning tip: If you have some tarnished or corroded brass that you want to clean, an old brass candlestick for example, you can use Coca-Cola, or any other cola soft drink, and that brass will come clean. 有个去污点子：如果你
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听力文摘：树也是人类的近亲
Last time we talked about the false belief that evolutionary theory says human beings descended from monkeys. 上次我们谈论到了关于人类进化论的错误观念：人类是猴子演变而来的。 In fact, evolution says that both human bei
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听力文摘：洋葱会杀死你的宠物
You may already know that chocolate can be lethal to your pet, but did you know that onions can be toxic to your cats and dogs too? And Im not just talking about their breath. 也许你已经知道巧克力对宠物的杀伤力，但是你知道小猫小
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听力文摘：睡不着? 暖暖手吧!
You okay, Don? 你还好吗，唐？ Sorry,Yael . I've been having trouble sleeping lately. 抱歉，我最近睡眠不好。 Have you tried thinking warm thoughts about your hands and feet? 你有没有想办法暖手暖脚呢？ Uh,No. Why would I
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听力文摘：鸟儿捕虫的法宝
Everyone is familiar with the sight of robins hopping around the yard, peering into the grass or head-cocking to locate a nice juicy worm. In no time, they find their prey and fly off with a mouthful. 后院里，知更鸟跳来跳去，注视着草丛
