This is Scientific Americans 60 second Science, I am Sophie Bushwick, got a minute? Comparisons of different animals have shown that larger brains provide greater intelligence, but they also guzzle more energy and have other consequences. Now scienti

发表于:2018-12-02 / 阅读(82) / 评论(0) 分类 Scientific American(一)月

The descendants of longtime urban dwellers show increased genetically driven resistance to tuberculosis, due to evolutionary selection pressure over millennia. Christopher Intagliata reports 城市长久居住民的后代,经过数千年的自然选择

发表于:2018-12-07 / 阅读(104) / 评论(0) 分类 60秒科学

Not many scientific studies begin like this: Many hours of watching YouTube clips. Trying to find as many yawns as possible. But for Andrew Gallup, an evolutionary psychologist who studies yawning at the State University of New York, it was all in a

发表于:2018-12-24 / 阅读(88) / 评论(0) 分类 2016年Scientific American(十)月

Naked skin or effectively naded skin has been the primary interface between the human body and the environment for over 200,000 years. Penn State anthropologist Nina Jablonski on the evolution of human skin pigmentation at the annual meeting of the A

发表于:2018-12-24 / 阅读(73) / 评论(0) 分类 Scientific American(二)月

You see it when you watch almost any game:theres a touchdown, a home run, a goal. An athlete has triumphed! And then,almost instantly they raise their arms over their shoulders, shout aggressivelyand push out their chest. Like an animal in the wild o

发表于:2018-12-24 / 阅读(52) / 评论(0) 分类 2014年Scientific American(一)月

Last Woollies Had Mammoth Mutations 长毛象灭绝的真正原因是 In their heyday, woolly mammoths blanketed the Siberian steppe, Alaska and large parts of North America. But by 10,000 years ago, warming climates had turned many of the grasslands

发表于:2018-12-24 / 阅读(63) / 评论(0) 分类 2017年Scientific American(六)月

How Did Dogs Become Mans Best Friend? 狗是如何让成为人类最好的朋友的呢? Weve all heard the phrase dog is mans best friend. But how did dogs get to be so friendly with humans? It turns out that dog domestication wasnt simply a matter

发表于:2018-12-28 / 阅读(55) / 评论(0) 分类 初学者听力文摘精选

科学研究发现,对陌生人友好是形成大社区的必要条件。 Fairness with Strangers May Be the Invention of Large SocietiesWere nice to our families. From an evolutionary perspective, that makes sense. But what makes us deal fairly wi

发表于:2019-01-02 / 阅读(112) / 评论(0) 分类 60秒科学

Keynote Speech at Microsoft Professional Developers Conference 早晨好。非常高兴与大家共聚一堂。在这里举行的微软中国第一届专业开发人员大会,是微软公司的一个重

发表于:2019-01-06 / 阅读(97) / 评论(0) 分类 阅读空间

By Kane Farabaugh New York City 16 June 2006 watch Flag Auction report Original flag For more than 225 years, a series of four flags hung on the walls of a family home in southern England. As they passed through generations, so did the story of what

发表于:2019-01-07 / 阅读(131) / 评论(0) 分类 2006年VOA标准英语(六月)

177. The prodigy天才 primarily-professionalism There was a prodigy whose profession was composing and performing music. He proclaimed that his talent lay in his proclivity to use prime number theories to develop his melodies and to call upon his pr

发表于:2019-01-08 / 阅读(136) / 评论(0) 分类 胡敏托福词汇记单词

Alligators Drift into Florida Canals Near Homes The lowly, ugly alligator is an American success story. An endangered species that was threatened with extinction all the way into the late 1980s, it has made such a comeback that there are now millions

发表于:2019-01-11 / 阅读(173) / 评论(0) 分类 VOA标准英语2012年(五月)

Genome Shows Humans More Gorilla-like than Thought Sixty scientists worked over five years to sequence the genome of a single female lowland gorilla, the last of the great apes to have its DNA mapped. According to lead author Aylwyn Scally, of the Tr

发表于:2019-01-13 / 阅读(79) / 评论(0) 分类 VOA标准英语2012年(三月)

The unexpected world of animals Art Chimes 20 November 2009 Time again for our Website of the Week, when we showcase interesting and innovative online destinations. This week, it's a site where learning about evolutionary biology is made painless, a

发表于:2019-01-14 / 阅读(70) / 评论(0) 分类 VOA标准英语2009年(十一月)

哺乳动物 脑部越大 嗅觉越灵? Researchers used computed tomography or CT scans to analyze the skulls of 190-million-year-old mammals found in a Jurassic-era fossil bed in China. These tiny critters, co-existed with thegiant, meat-eating d

发表于:2019-01-14 / 阅读(55) / 评论(0) 分类 VOA标准英语2016年(七月)

How Ancient Women Survived War 古代女性战争幸存下来 Traditional stories from around the world are providing insight into how ancient women survived war. The oral histories tell of women developing strategies to protect themselves and their

发表于:2019-01-14 / 阅读(78) / 评论(0) 分类 VOA标准英语2014年(十一月)

Scientists Sequence Smallest Genome Ever With Antarctic Fly 科学家从南极苍蝇测定最小基因序列 Scientists have just sequenced the genome of a fly native to Antarctica, the coldest, driest and windiest place on the planet, a finding that

发表于:2019-01-14 / 阅读(52) / 评论(0) 分类 VOA标准英语2014年(八月)

KELLY MCEVERS, HOST: White nationalists were among the first to embrace Donald Trump's candidacy, and they celebrated after his election. Since then, the so-called alt-right has splintered. As Frank Morris of member station KCUR reports, the movement

发表于:2019-01-16 / 阅读(278) / 评论(0) 分类 2017年NPR美国国家公共电台1月

AILSA CHANG, HOST: Scientists said today that they have made a surprising discovery about prehistoric sex. Researchers say that they have found direct evidence that different types of human-like ancestors were mating with each other. NPR's Laurel Wam

发表于:2019-01-17 / 阅读(213) / 评论(0) 分类 2018年NPR美国国家公共电台8月

Species Split When Mountains Rise生脉隆起导致生物多样化 The tropics are well known for their biodiversity. But another hotspot? Mountains. Like the Hengduan Mountains, in south-central China. 热带地区因为其生物多样性而为大家所

发表于:2019-01-20 / 阅读(95) / 评论(0) 分类 2017年Scientific American(四)月