How many times have you heard a jet plane going over, looked up to see it, but not been able tofind it even though you were looking toward where the sound was coming from? 有多少次你听到一架喷气式飞机飞过，抬起头去看它，即使你...
Dear A Moment of Science, 亲爱的《科学一科》栏目组： Why do we sleep? 我们为什么需要睡觉？ I know this question has been debated by scientists and philosophers forcenturies, but are there any hard and fast answers? 我知道科学...
Scientists used to think that for all its complexity, the brain was pretty static. 科学家们过去常常认为，大脑因为其复杂性而呈现出静止状态。 Once the brainmatured, it essentially stopped growing and changing. 一旦成熟，大...
Scientists have long been aware of the link between drinking andsmoking. 科学家们长期以来一直在研究喝酒和抽烟之间的联系。 In fact, eighty to ninety percent of alcoholics alsosmoke, which is about three times the rate in the ge...
Our sense of smell can have a large impact on how we think and feel. 我们的嗅觉对我们的思维和感觉能够产生很大影响。 But did you know that mood can affect how we smell? 但你知道吗，心情也是能够影响嗅觉的。 Acco...
Our sense of smell can have a large impact on how we think and feel. 我们的嗅觉对我们的思维和感觉能够产生很大影响。 But did you know that mood can affect how we smell? 但你知道吗，心情也是能够影响嗅觉的。 Acco...
I guess you never heard of Trigona hypogea, a South Americanbee that not only collects meat from animal carcasses, but has more recently been discovered to have a taste for live prey as well. 你也许从未听过一种南美洲的蜜蜂，它们不仅...
Good afternoon, this is your captain speaking. 下午好，我是这架飞机的机长。 We are atcruising altitude and will be in flight for another three hours, so you'd better get comfortable. 我们已经到达了巡航高度并且将继续飞3个...
Have you heard the one about the jellyfish, the monkey, and the glow in the dark cat? 你听说过关于水母、猴子和在荧光猫的事情吗？ Actually, it's no joke: scientists are experimenting with ways to combat HIV and AIDS by injecting c...
You're out on the golf course one pleasant afternoon. 在一个舒适的下午，你站在高尔夫球场上。 Your ball is set on the tee. 把球在球托上放好， You lean overthe ball. 身体倾斜到球的上方， You grip the club just righ...
When we are in a fairly dark room, or outside at night away from lights, we can still see, but wecan't see the colors of things very well. Why is that? 当我们在一个非常昏暗的房间或夜晚在无灯的户外，我们仍然可以看见物体，...
Look at various parts of the sky on a clear day and you will see that it is not a uniform blue. 抬头仰望天空，你会发现在晴朗的日子里，天空并不会呈现出统一的蓝色。 Even if the sky is deep blue when you look straight up...
It's easy to tell, even at a glance, that people and moose are pretty different. 很显然，即便只是匆匆一瞥，也能轻易看出人和糜鹿是完全不同的动物。 Moose, at leastmales, have big, wing shaped antlers. 糜鹿，至少是雄...
Why refrigerators hum，on toay's moment of science. 今天的科学一刻我们要探讨冰箱会发出声音的原因。 On the recent program we have discussed how fluorocarbon coolant cools your food by coming to a boil in coils hidden in your fr...
Let's say you're an 18 year old male who runs every other day, logging 12 miles a week. 假设你是一个18岁的男性，每隔一天就会跑步，算下来每周会跑12英里。 Now fast-forward to your late 40's. 现在，把你的年龄快速往...
