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This is SCIENCE IN THE NEWS in VOA Special English. Im Barbara Klein. And Im Steve Ember. Today we talk about hair. We will tell what hair is, how it grows, and some of the main reasons people lose it. Hair has always been an important sign of beauty

SSS 2009-04-13

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi

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That's right, I answered immediately, hiding my surprise at his casual use of the word. 没错。我立刻答道，掩饰着自己对他漫不经心地用着这个词的惊讶。 He shook his head. You're incredible. 他摇了摇头：你简直难以置

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So thank goodness for atoms. 所以，谢天谢地，有了原子。 But the fact that you have atoms and that they assemble in such a willing manner is only part of what got you here. 不过，有了原子，它们心甘情愿地聚集在一起，这只

TED演讲:科技并没有改变爱 为什么?(8)

Along with this, we see a rise of a host of beliefs: 不仅如此，各种信仰开始传播： the belief of virginity at marriage, arranged marriages -- strictly arranged marriages 坚信婚前必须保持处女身，包办婚姻（严格安排的婚

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

GRE优秀作文赏析：科学的作用

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The Burgess Shale included a range of disparity in anatomical designs never again equaled, 布尔吉斯页岩化石所包含的横剖面的花色范围是独一无一的， and not matched today by all the creatures in the world's oceans, Gould wrote

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台湾籍旅美老师今天交给我们的句子是： Genetics isn't all that drives hair loss. Long periods of stress can release signals that shock follicles and force them into the resting phase prematurely. 掉发不完全是基因所导致。长期