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material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi

发表于:2018-12-02 / 阅读(148) / 评论(0) 分类 Scientific American(十二)月

This is an ode to the mother goddess, that most of us in India learn when we are children. 有一首关于印度神母的颂歌,是我们大部分的印度人从小就学习的。 I learned it when I was four at my mother's knee. 在我四岁的时候

发表于:2018-12-19 / 阅读(186) / 评论(0) 分类 TED演讲教育篇

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Creationists often publish lists of a few dozen scientists who doubt Darwin. So in 2003, the National Center for Science Education put together a list of 200 scientist

发表于:2018-12-24 / 阅读(124) / 评论(0) 分类 Scientific American(二)月

And I hope you've had as much fun as I've had. London is a fine finale for any European adventure. I've been visiting her for years and our relationship is thriving. People tell me,

发表于:2019-01-02 / 阅读(112) / 评论(0) 分类 雾都漫步

By Matt Steinglass Hanoi 01 June 2007 Vietnamese Internet users are experiencing slower service after thieves stole part of the one of the country's main fiber-optic transmission cables from the sea floor and sold it for scrap. If one more cable is c

发表于:2019-01-11 / 阅读(174) / 评论(0) 分类 2007年VOA标准英语(六月)

Finance and Economics;BTG Pactual goes public;Back to basics; 财经;巴西投行BTG公开上市;返璞归真的巴西投行; A purist pay scheme at Brazil's high-flying investment bank; 巴西投行雄心壮志,薪酬方案追求纯粹;

发表于:2019-01-27 / 阅读(88) / 评论(0) 分类 经济学人财经系列

London 雾都漫步And I hope you've had as much fun as I've had. London is a fine finale for any European adventure. I've been visiting her for years and our relationship is thriving. People tell me, You know, you've got a great job. And you know so

发表于:2019-01-30 / 阅读(106) / 评论(0) 分类 双语有声阅读

How Not to be Wrong, by Jordan Ellenberg 乔丹艾伦伯格《如何避免错误》 Ellenberg, a mathematician and writer, explains how math plays into our daily lives without our even knowing it. Each chapter starts with a subject that seems fairly

发表于:2019-02-01 / 阅读(100) / 评论(0) 分类 阅读空间

DAVID GREENE, HOST: Well, the future of Brexit is uncertain this morning. So is the future for Prime Minister Theresa May. Really, so is the future of Britain. The prime minister is facing a vote of no confidence today. This comes after her governmen

发表于:2019-03-04 / 阅读(135) / 评论(0) 分类 2019年NPR美国国家公共电台1月
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