遗传[的]可变性

Treasury Secretary Henry Paulson and Fed Chairman Ben Bernanke are sitting down at this hour with congressional leaders to discuss the widening economic crisis. Stock prices rebounded sharply today. That followed a report the administration has a ne

发表于:2018-12-20 / 阅读(37) / 评论(0) 分类 2008年NPR美国国家公共电台九月

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds an

发表于:2019-01-08 / 阅读(65) / 评论(0) 分类 Scientific American(三)月

This is Scientific American 60 Second Science, I am Christopher Intagliata, got a minute. Scientists discover new species all the timeon the order of 15,000 a year. One of the latest additions to the tree of life is a new type of leopard frog. Which

发表于:2019-01-08 / 阅读(52) / 评论(0) 分类 Scientific American(三)月

Life Extension May Add Just Bad Time Living longer doesnt necessarily mean living better. Thats the lesson from the tiny roundworm called C. elegans, long a workhorse in basic biology lab work. The research is in the Proceedings of the National Acade

发表于:2019-02-14 / 阅读(34) / 评论(0) 分类 2018年科学美国人3月

Science and technology 科学技术 Cell biology 细胞生物学 On your marks... 各就各位 The first cell race in history may further knowledge about how cancers spread 历史上的首次细胞赛跑,可能增进了解有关癌症如何扩散的知

发表于:2019-02-16 / 阅读(23) / 评论(0) 分类 经济学人科技系列

Science and technology. 科技。 Nanotechnology. 纳米技术。 A fab result. 生物工厂。 A novel way of making computer memories, using bacteria. 制造计算机存储器的新奇方法:使用细菌。 FOR half a century, the essence of prog

发表于:2019-02-19 / 阅读(39) / 评论(0) 分类 经济学人综合