population-凯发k8官网

12-12-17 higher rates of schizophrenia（精神分裂症） in urban areas can be attributed to increased deprivation, increased population density and an increase in inequality within a neighbourhood, new research reveals. the research, led by the university of ca...

12-12-07 despite their modern-day diversity of language, lifestyle, and religion, europe's widespread romani population shares a common, if complex, past. it all began in northwestern india about 1,500 years ago, according to a study reported on december 6th...

12-11-28 social and physical scientists have long been concerned about the effects of humans on earth's surface -- in part through deforestation, encroachment（侵犯） of urban areas onto traditionally agricultural lands, and erosion of soils -- and the impli...

12-10-17 sumatran orangutans have undergone a substantial recent population decline, according to a new genetic study, but the same research revealed the existence of critical corridors for dispersal（分散，传播） migrations that, if protected, can help main...

12-06-18 population estimates for the amazon basin just before europeans arrived range from 2 to 10 million people. the newly reported reconstruction of amazonian prehistory by smithsonian scientist dolores r. piperno and colleagues suggests that large areas...

12-06-18 american mountain lions, or cougars（美洲狮） , are re-emerging in areas of the united states, reversing 100 years of decline. the evidence, published in the journal of wildlife management, raises new conservation questions, such as how humans can l...

12-06-12 although it's long been suspected that human activity has greatly contributed to environmental stress, it's only recently that science has begun to show just how great a role that activity is playing. in an article published in the journal nature cl...

12-05-24 more than 57,000 people are in jail in cuba, according to a rare report about the prison population published by the communist party newspaper, granma. 古巴共产党报《格拉玛报》罕见地发表了一篇报告，称古巴境内有57000多名囚犯。 granma said efforts had...

12-05-21 japanese researchers on friday unveiled a population clock that showed the nation's people could theoretically become extinct in 1,000 years because of declining birth rates. 日本研究人员上周五发布了一个人口倒计时钟，该时钟显示，由于出生率持续下降，...

12-05-16 what goes bump in the night? in many u.s. households: people. that's according to new stanford university school of medicine research, which found that about 3.6 percent of u.s. adults -- or upward of 8.4 million -- are prone to sleepwalking. the wo...