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2022-06-25   Video
Differentiation and the Fate of Cells

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Here we're going to go through quickly the early stages of development again. And then we're going to get to this stage when the germ layers are set aside. The three germ layers, the ...


2022-06-24   British English
Electronic Education

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Electronic education. Flipping the classroom. Hopes that the internet can improve teaching may at last be bearing fruit. THE 12-year-olds filing into Courtney Cadwell’s classroom at Egan Junior H...

电子教学 跃然于教室间 但愿互联网可以改善教学的希望终能修成正果 Egan初中坐落于硅谷郊外郁郁葱葱的洛斯拉图斯,那里12岁的孩子们选了考特尼·卡德威尔老师的课程,他们每个人都从手推车里拿一部白色笔记本电脑,然后登陆到网站...


2022-06-21   Intermediate
Searching for Intelligence

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Steve: What, really, is intelligence? Zimmer: Well there are a lot of different ways of testing intelligence, and you can find them on IQ tests and other kinds of tests; and they tend to correlate to...


2022-06-21   Video
Zebrafish Heart Regeneration

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Zebrafish, which any of you who are fish fanciers keep in the fish tank, can get to be about two inches long. It's got a little heart with just two chambers one atrium and one ventricle an...


2022-06-17   Intermediate
The Large Hadron Collider

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Steve: Dr. Wilczek—thanks very much for talking to me today. Wilczek: My pleasure. Steve: Let's get to the most important thing for us. How is your opera career going? Wilczek: (laughs) My opera ca...


2022-06-17   Video
Somatic Cell Nuclear Transfer (Schematic)

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Show us the nuclear transfer we'd seen before, but now we're going to see it as an example where a skin cell nucleus is going to be used to make an embryonic stem cell. So the egg cell has...


2022-06-16   Pre-Intermediate
Angst for the Educated

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Angst for the educated. A university degree no longer confers financial security. MILLIONS of school-leavers in the rich world are about to bid a tearful goodbye to their parents and start a new l...

大学毕业生的担忧 大学学历已经不再保证金融安全 发达国家数百万的高中毕业生将要含泪告别他们的父母,开始新的大学生活。有些人被纯粹热爱学习鼓舞着。但是大部分人同样相信在大学待三、四年,虽然在这个过程中累积了大量的债务,但他们获得高...


2022-06-13   Video
Salamander Limb Regeneration

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We're going to have a look at the way in which an amputated limb grows over the course of about 90 days in a salamander. That's a time-lapse movie, watching that thing grow. And now we're ...


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