In his book Cosmos, the late scientist Carl Sagan talks aboutthe way in which the earth is regularly struck by material fromouter space. 已故科学家卡尔萨根在著作《宇宙》中叙述了外太空物体如何有规律和地球发生碰撞。...
Do cats eat spiders? 猫吃蜘蛛吗？ Our answer? Yes, they do. 我们的答案是是的，猫吃蜘蛛。 And that's not all cats will eat. 但不是所有的猫都吃蜘蛛。 Cats,both domestic and wild, are obligatory carnivores, meaningthat th...
Let's start by reviewing the ways in which the surface of ourlips is different from the surface of the skin on the rest of ourbodies. 首先，我们需要知道嘴唇的表皮有别于身体其他部位的。 Basically, our lips are made of the same...
Psychologists have found that people who believe in a just world are more likely to worship celebrities, 心理学家发现，信仰公平世界的人更有可能崇拜名人， whereas people more critical of society are less likely to obsess over a...
Think humans are the only creatures capable of grooving to a beat? 人类是唯一能够随着节拍起舞的生物吗？ Think again. 不是。 Turns out agrowing number of animals are just as musically inclined. 事实上，越来越多的动物显示...
Don, flying is tougher than walking or running, right? 飞行比走路和跑步都要困难些，对吧？ So how come birds don't get winded and run out of breath? 那为什么鸟类飞行的时候不会喘不过气来？ Actually, in terms of dista...
As we know from the movie, the Hulk is a guy who, when hegets angry, turns into the strongest, meanest creature onearth. 看过电影《绿巨人》的都知道，每当班纳尔生气时，就会失去自我意识，变身成为地球上最强壮最具...
How do you improve at any sport? You train, train, train. 你怎样才能在体育运动方面有所提高呢？你不停地锻炼。 But how you train is just as important as how much. 但是你怎样锻炼与锻炼量的多少同样重要。 Armed...
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...
All over the country, beach managers have tried to make beaches safer by discouraging the use ofglass bottles on the sand. 在全国范围内，为了安全起见，主管沙滩的经理们都不鼓励把玻璃洒用于沙滩。 Florida, however, has...
Depending on the species, bird eggs can be any color rangingfrom chicken's plain white to a robin's blue, streaked, spotted,bright, pale, and anything in between. 不同鸟类蛋壳的颜色千差万别，鸡蛋是纯白色，知更鸟蛋是蓝色，其...
They're cute, they're furry and sometimes they like to bringyou dead birds or rodents. That's right, we're talking cats here. 可爱的，毛茸茸的，有时会给你捎来死去的小鸟和啮齿动物的小家伙对啦，我说的就是猫咪。...
Never a happy topic, bed wetting is a very distressing problemfor five to seven million American kids. 尿床可是个不愉快的话题。尿床困扰着500万至700万名美国儿童。 If we can't explain whysome people like to pick on these kids,...
You wake up one morning to find a strange man standing in your kitchen; worse than that, heseems to have made himself completely at home. 你一早醒来，发现你的厨房里站着一个陌生人。更糟糕的是，他似乎像在自己家一样随...
If you've ever seen a bicycle race, you might have noticed the riders lining up behind each other instraight columns. 如果你看过自行车比赛，你或许注意到自行车手们都一个跟着一个排成一队。 Bicycle racers spend much of...
