Aristotle thought the stars were all exactly the same distance away, stuck to a dark shell that surrounded the Earth like the dome of a planetarium. Now we know that the farthest galaxy is over a billion times more distant than the nearest star. How...
Before MP3s and other forms of digitized music there were CDs. Before CDs came vinyl records. And before vinyl? 在MP3和其它形式的数字音乐盛行之前，CD已经出现。在CD出现之前有黑胶唱片,那么在黑胶唱片之前有什么呢...
Everybody loves the swimming pool. But how clean is the water in the average backyard or public pool? If you trust chlorine to take care of germs, you're in for a surprise. 人人都爱游泳。但是在普通人家后院的泳池和公共泳池里的水...
fight tooth and nail 全力拼博 In our civilized, modern life, we use our teeth for eating only, and our fingernails and toenails are used hardly at all, except for decoration. Among animals, however, teeth and nails are often used to collect food...
Don: Yael, see this glass full of water? 唐：雅艾尔，看见这杯装满水的玻璃杯吗？ Yael: Yes. 雅艾尔：是的。 Don: Watch me swing it around my head! 唐：看我让它在我头上摆动！ Yael: Look out!!!...Hey, how did you do...
If you've been outside before a rainfall in the spring, you might have noticed a particularly fresh or sweet smell that seeps into the air a few minutes before the first drops begin to fall. If you're familiar with this smell, it's a great way to pre...
Yael: Hey Don, what was your favorite subject in grade school? Science, right? 雅艾尔：嘿，唐，你在小学时最喜欢的课程是哪一门？科学课，是吗？ Don: I loved science, but my favorite part of school was definitely recess. 唐...
Don: Hey, Yael, Have you heard We've discovered two new oceans? 唐：嘿，雅艾尔，你听说过吗，我们发现了两处新大洋？ Yael: Where? 雅艾尔：在哪里？ Don: On Mars. Well, they aren't there any longer, but they were there a...
We may never know if the chicken or the egg came first, but scientists have discovered a fossil that sheds light on how turtles got their shells. Since the time of the dinosaurs, turtles have looked much the same as they do today, complete with boney...
If you found yourself instantly transported to the freezing arctic, your first concern would be keeping warm. But what about the animals that make their homes on these vast fields of ice and snow? Do polar bears need to worry about freezing to death?...
Yael: Time to go again to the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, I recently read about how drinking as many as seven cups of coffee per day can make me hallucinate. Is this true? I'm a pretty heavy coffee drinke...
Is there any sound more annoying than the whine of a mosquito? Yes, mosquitoes are pests through and through. But there's more to their irritating whine than meets the ear. For mosquitoes, that's the sound of love. It's well known by scientists that...
Yael: Hey Don, see that guy over there? I'm always forgetting his name! 雅艾尔：嘿，唐，看见那边那个人了吗？我总是忘记他叫什么！ Don: Oh, you mean Matt? 唐：欧，你是指马特吗？ Yael: Yeah, that's it! You know, it...
Dear Annie: 亲爱的安妮： When my son was 14, he was friends with Tim, a boy who drank and did drugs at a young age and who once stole his father's car and took my son joyriding around the neighborhood. I didn't want our son hanging out with Tim...
It's three in the morning and you're awakened out of a deep sleep by a terrible pain in the gut. Was it something you ate? And then it hits youthat burger you had the other day was a little undercooked. And there have been several cases of e-coli poi...
