常速英语

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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 ...

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Human society is extremely complex and fragile, built upon various pillars. One of them is the honey bee. One out of three meals eaten by humans is made possible by honey bees. They are ...

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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...

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The international banking system is an enigma. There are more than 30.000 different banks world wide, and they hold unbelievable amounts of assets. The top 10 banks alone account for roughly 25 ...

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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...

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Recently there has been a lot of talk about measles. What does measles actually do, and should you vaccinate against it? Or is this just hysteria? Measles is a virus: a hull of proteins,...

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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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Planet Earth is the home of every lifeform, known to us, in the universe. Its age is about 1/3 of the age of the universe and, admitted, It is a thing of beauty. a slightly squashed fai...