科学研究   

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First up, George Musser and the entire universe. Steve: George, thanks for coming into my office here to explain this to me. George: Thanks for letting me fit into your office Steve. Steve: It's no...

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But you also know that viruses are sub-microscopic. They're exceedingly small. Let me give you some sense of the scale that we're talking about here in more human terms. Let's imagine that I am...

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Science and Technology 【Clean water 】 Silver threads of life 【A water filter that kills bacteria, rather than just removing them 】 MORE than a billion people lack clean water-and in most cases t...

科技 清洁水源 生命的银丝带 新滤水器能够消灭细菌，而不单单是排除细菌 超过十亿人口缺少饮用水，并且在绝大多数情况下缺少的只是纯净的水，而不是水本身。其结果是给人们带来了疾病，特别是每年夺取数百万儿童性命并使更多的儿...

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I'm here at Ben and Jerry's. And who are you? Derek: My name is Derek Spors. I am an ice cream scientician. Steve: And, what does that mean? What's your background? Derek: My background is food sci...

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Researchers train high-speed video on schooling fish to track the motion of each individual, revealing how information and decisions travel through the group. Collective behavior is embodied in swa...

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To illustrate the role of the Per's (period) and Cry's (cryptochrome). So what we have here are BMAL and CLOCK which are the positive activators actually of a set of at least 5 genes. All three Per ge...

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Science and Technology 【Diagnosing dementia】 Advance warning 【How to detect Alzheimer's before symptoms appear-if you are a woman】 ALZHEIMER'S disease has no cure. There are, however, five drug...

科技 痴呆症的诊断 病情恶化预警 作为一名女性，如何在症状出现前诊断阿尔茨海默氏症 阿尔茨海默氏症目前尚无法治愈。然而，有五种已知并获批准的药物能减缓其症状的恶化。这些药物越早使用，效果越佳。遗憾的是，该疾病一般在病...

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Most people are astonished to learn that possibly only 10 percent of the kinds of plants and animals and microorganisms—especially when you throw in little creatures, what I like to call the little cr...