SSS 2010-11-30

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute？ The November 26th issue of the journal Science included a study showing that the extinction of the dinosaurs some 65 million years ago allowed puny mammals to get really

发表于:2018-12-24 / 阅读(54) / 评论(0) 分类 Scientific American(十一)月
最新学习文章
热门学习文章