单词：lifespan study
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This Scientific Americans 60-Second Science. I am Karen Hopkin. This will just take a minute. They say that older folks benefit from spending time with young people. And thats not just an excuse to stick grandma at the kids table at Thanksgiving. Now
Scientific American(五)月
Did you know birds sing in dialect? They do. The song of a great tit from the countryside is a far cry from that of his city cousin. And some song dialects can change nearly as fast as human slangthe Indigo Bunting changes tune from year to year. To
Scientific American(十)月
If you were to lay your digestive tract out in a straight line, it would form a tube spanning nearly ten meters. 如果你将消化道拉直成一条线，它的样子就像是一条长达将近十公尺的管子。 学习重点： 1.digestive tract 消
留美老师带你每日说英文
Britons are the fattest people in Europe, with one of the world's fastest obesity(肥胖) growth rates, according to a leading international think-tank（智囊团）. The UK comes top out of 20 European Union nations, with almost one in four people
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By David McAlary Washington 02 May 2007 U.S. researchers have discovered a gene that promotes longer life in earthworms that eat much less than normal. Humans have similar genes, and VOA's David McAlary reports that, if they work the same way as in t
2007年VOA标准英语（五月）
And there are certain forms of the FOXO gene 我们发现活到90或者100岁人里 that have found to be more frequently present 最常有的 in people who live to be 90 or 100. 某种FOXO基因 And that's the case all over the world, 这是遍布全球
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