Old Fashioned Ice Cream Makers 老式冰淇淋机 Have you ever seen an old-fashioned ice cream maker? 你是否见过冰淇淋机？ Nestled inside the wooden bucket, there's a metal canister with a hand crank on top. 这种冰淇淋机带有木桶，...
One of the really interesting things about the nicotine in cigarettes is that it works in two ways. 香烟中尼古丁的其中一个非常有趣的特质是，它以两种完全不同的方式工作。 When you take a long drag, it acts as a tranqui...
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 sleeping can plague those visi...
Even without the guidance of organized religion, some animals instinctively know that it's a good thing to help others. 即使没有类似人类宗教的指引，有些动物仍能本能地救助处于危难中的其它动物。 For example, when a b...
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 unusual blending of the sen...
It's time to go again to the A Moment of Science mailbag. A listener writes: 又到了科学一刻的读信时间，一位听友写道： Dear A Moment of Science, 亲爱的《科学一刻》栏目： Everyone gets bored from time to time. But I was...
In books and movies like Call of the Wild, huge, vicious huskies pull sleds for hundreds of miles over the Alaskan tundra. A Moment of Science wonders, what kind of dogs are sled dogs? 在书里或者在像《野性的呼唤》之类的电影里，巨型...
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 vicious blows to the...
When you go back to work or class after lunch, why is it so hard to stay awake? 当我们用完午餐回去工作或上课时，为什么很难保持清醒呢？ Although we get energy from food, we also use lots of energy to digest it. Your energy u...
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. 犹如科幻小说里的时间旅行者，一种曾存活在更新世晚期的极地植物...
