CNN 2010-03-27

PHILLIPS: Well, it's spring break at Cornell University and you'd think that students would be celebrating. Their basketball team's unlikely birth in the NCAA's Sweet 16 tournament. But instead, there is a depressing reality at that Ivy League school

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One common protein-contact prediction is that, if the side chain of one member of a pair of amino acids brought close together by folding is long, 一种比较普通的蛋白质接触预测就是，如果一对氨基酸的一个侧链折叠后很长，

ESL Podcast 634 – Resembling One’s Parents

Khaled: Hi, what are you looking at? Susanna: Your photo albums . Your roommate let me in and said I could make myself comfortable while I waited for you. Khaled: There are some really incriminating pictures in there. Youd better give those back to m

SSS 2009-01-23

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

SSS 2009-04-28

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

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85 新功效的抗生素在加州诞生 DATE=8-15-01 TITLE=SCIENCE REPORT - Designer Antibiotics BYLINE=Jerilyn Watson （Start at 1'04

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SSS 2008-10-17

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi

SSS 2009-09-17

The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt

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By Jim Malone Washington 21 March 2008 The U.S. State Department said Friday that the passport files of all three remaining presidential candidates had been improperly breached by contract workers. The revelation prompted an apology from Secretary of

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By Peter Fedynsky Washington, DC 25 October 2006 watch US Election Issues Americans go to the polls on November 7th in a midterm election that could give opposition Democrats control of Congress. As VOA's Peter Fedynsky reports, no single issue is l

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By Michael Drudge London 27 April 2006 The government of British Prime Minister Tony Blair has been battered this week by allegations of incompetence, scandal and corruption that have stirred voters'

经济学人152:攻破屏障

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Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis

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For the past several decades Republican presidential candidates have been able to count on winning in the Rocky Mountain states so they could concentrate their efforts elsewhere. But this year the Democrats are making inroads in those states and cou

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19 The Rise Of Life 第十九章 生命的起源 In 1953, Stanley Miller, a graduate student at the University of Chicago, took two flasksone containing a little water to represent a primeval ocean, 1953年，芝加哥大学的研究生斯坦利米勒拿

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Proteins are what you get when you string amino acids together, and we need a lot of them. 你把氨基酸串在一起，就得到了蛋白质。我们需要大量的蛋白质。 No one really knows, but there may be as many as a million types of pro

每天吃鲑鱼 像戒烟一样有益

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说，每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

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There's an interesting illustration of this. 举一个有趣的例子。 I have to go slightly obscure, but really you should seek it out. 可能这个例子没那么直观，但是你应该可以理解。 There's a movie by the Canadian film directo