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The Fermi Paradox Back in 1950, the Nobel prize-winning physicist Enrico Fermi was having lunch with friends. Conversation turned to the possibility of extraterrestrial life. According to the popular story, Fermi fell silent for a moment and then ask
Afterglow Heres an experiment you can try: look at something bright relative to its surroundings, such as a lamp or a sunny window, for ten seconds without blink ing . Then shut your eyes and cover them over with your hands. You will find that the la
查看译文 tips: 怎样阅读才是有质量的阅读了? 中英对照请点击【中英对照】查看译文请点击 【查看译文】进行核对。 Pens in Space Legend has it that NASA spent a million dollars developing a pressurized ballpo
Wolverine the Weasel behind the Myth 狼獾神话背后的鼬鼠 For most people the wolverine is best known as an inspiration for the distinctive design of the University of Michigan logo and as the name of an X-Men character. Real wolverine s cant
梦可以预知未来? D: Lots of people have had dreams that seem to foretell the future. Some psychologists attribute this to retrieval cues. Y: Retrieval cues? D: A retrieval cue is a coincidence in the real world that trigger s a dream memory w
黑洞是一种引力极强的天体,就连光也不能逃脱。当恒星的史瓦西半径小到一定程度时,就连垂直表面发射的光都无法逃逸了。这时恒星就变成了黑洞。说它黑,是指它就像宇宙中的无底洞,
Motional Induction Last time, we talked about motional induction , a phenomenon by which the ocean generate s a magnetic field. It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms in it, in the form of dissolve
Microneedles 微针疗法 Female: From flu vaccin es to tetanus booster s , injections are a must in modern medicine. But do they always have to make you say Ouch? Male: Eh,no? F: No,indeed.If new microneedle technology is successful, we may soon hav
地球是太阳系从内到外的第三颗行星,也是太阳系中直径、质量和密度最大的类地行星。它也经常被称作世界。英语的地球Earth一词来自于古英语及日耳曼语。地球已有44~46亿岁,有一颗天然
Is squinting really that effective? 眯眼睛真的有效吗? Male: Thanks for coming on this fact-finding trip with me and share the driving. Female: Glad to do it. It should be a fun trip. I imagine I will learn a lot. M: I hope so. So i think we
a butterfly with glowing eyes Believe it or not, Monteiro and her team insert ed a new gene into the butterflys genetic sequenceone taken from a jellyfish . No, I know you're fooling. Actually I'm not. This gene codes for a green florescent protein t
When Marmoset s Think About Love 小猴子表达如何爱 狨猴( Marmoset ),又称指猴,是生活在在南美洲亚马逊河流域的森林中的一种世界上最小的猴子。这种猴长大后身高仅1012厘米,重80100克。新生猴只
对于外太空,亲,你知道多少呢?旅行者号,你知道吗?太阳风,你知道吗如果你的答案是no,那我们都是一样的哦,宇宙太奇妙,需要一代代人不断去探索.今天我们就来讲讲我们的太阳系 The Real Final Fro
Carnivorous Bees 蜜蜂也吃肉? I guess you never heard of Trigona hypogea, a South American bee that not only collects meat from animal carcasses, but has more recently been discovered to have a taste for live prey as well. Scientists have seen
M: Kids these days! They have no respect; they don't know the value of dollar;they can't pay attention to anything for long. F: Actually, that last one may be true. Well,the older generation always complains about kids. But researchers who study the
Ya?l: Somebody bought my daughter a game called Cuddies. Don: I love that game! Y: I don't know about that. But the little plastic tongue-like part of that strange insect like body did inspire me to wonder about taste and insects. Do insects have t
About six or seven million years ago chimpanzees and humans evolved from a common primate ancestor. Chimps went on to become the relatively small-brained, forest dwelling creatures we know and love. Humans went on to evolve large brains, spread throu
Dear Annie: I have known Celia for five years and love her like a sister. A few months ago, I found out that Celia's husband is having an affair with a former employee. I know he meets this woman at variousout-of-the-way places and that he leaves wor
Picture this: A foraging squirrel comes into range of a hungry, coiled rattlesnake. The squirrel realizes the danger too late--the rattlesnake strikes out and bites, fangs pumping venom deep into the squirrel's small body. The poison doesn't kill imm
Think back to your college days, the good old days when life was easy. Stay up all night partying or even studying? No problem. Eat pizza every night and plow through entire bags of potato chips at one sitting. Hey, no sweat. You were a lean, mean, a