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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If you paid attention during high school biology, you probably remember that girls are born with all the eggs theyll ever have, whereas guys are churning

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In so doing, I reached a frontier of biology so strange, so rich, 通过这样的方式，我来到一个非常古怪却又非常丰富的生物学领域， that it seemed as though it exists on another planet. 简直就像降临到别的星球一样。

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This is Scientific Americans' 60-Second Science. Im Cynthia Graber. Thisll just take a minute. When is an ant like a piece of fruit? When its infected by a parasite. Researchers affiliated with the Smithsonian Tropical Research Institute discovered t

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Cocoa Foundation Selects Researchers for US Study The scientists are from Costa Rica, Ghana, Vietnam, the Philippines and three from Cote dIvoire, the worlds largest producer of cocoa beans. While in the United States, theyll work with a mentor at re

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Larry和李华今天去给他们的朋友Jim买结婚礼物。Jim下个周末就要结婚。今天李华会学到两个常用语：to tie the knot和drop-dead gorgeous. LL: I can't believe Jim is goin

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美国之音《流行美语》

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