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Forensic Science: Trials with Errors法医学真的科学吗 We have increasing doubts about this evidence, but we dont feel yet that we have the scientific knowledge and basis to exclude it altogether. 虽然对这一证据的怀疑日渐加深,但我

发表于:2019-01-20 / 阅读(67) / 评论(0) 分类 2017年Scientific American(六)月

On May 19th, President Obama announced a new federal gas mileage standard. He wants the countrys entire car and light truck fleet to average 35.5 miles per gallon by 2016. Some reaction was swift and to the point. Heres forlorn Oklahoma Senator Tom

发表于:2019-01-30 / 阅读(100) / 评论(0) 分类 60秒科学

Remember the heady days of 2007, before the large economy sized recession? Well, even back then medical problems contributed to over 62 percent of all bankruptcies. Thats according to a study by researchers at Harvard Med, Harvard Law and Ohio Unive

发表于:2019-01-30 / 阅读(112) / 评论(0) 分类 60秒科学

Are Parasites to Thank for Sex? A study in the journal The American Naturalist implies that parasites helped drive the development of sex, because the shuffling of genes gives sex-produced progeny an advantage over asexual genetic clones. Cynthia Gr

发表于:2019-01-30 / 阅读(86) / 评论(0) 分类 60秒科学

Fitness Linked to Smartness A study in the Proceedings of the National Academy of Sciences finds that men's cardiovascular fitness at the age of 18 is a marker for later academic achievement. Karen Hopkin reports Any school kid can tell you: nerds ar

发表于:2019-01-30 / 阅读(186) / 评论(0) 分类 60秒科学