• 类固醇在环境中留存的时间超过预期

    13-09-27 Assessing the risk posed to aquatic organisms by the discharge of certain steroids(类固醇) and pharmaceutical products into waterways is often based on a belief that as the compounds degrade, the ecological risks naturally decline. But there's gro...

  • 土壤生物功能与生态系统形成

    13-07-25 Glacier retreat areas provide an excellent window into the evolution of microbial communities, an ideal opportunity for scientists to study how quickly soil biological functions become established and how ecosystems begin to form. Soils are not stat...

  • 自然界的汞排放多属历史原因

    13-07-09 Environmental researchers at Harvard University have published evidence that significant reductions in mercury emissions will be necessary just to stabilize current levels of the toxic element in the environment. So much mercury persists in surface...

  • 细菌对净化水质起重要作用

    13-05-29 To better understand how bacteria impact the environment a former University of California, Riverside graduate student spent nearly a year building a system that replicates a human colon, septic tank(化粪池) and groundwater and fed the colon three...

  • 土地对保持生态环境健康有重要作用

    13-02-19 While many people recognize that clean water and air are signs of a healthy ecosystem, most do not realize that a critical part of the environment is right beneath their feet, according to a Penn State hydrologist. The ground plays an important role...

  • 快速的城市扩张威胁着生物多样性

    12-09-18 A brief window of opportunity exists to shape the development of cities globally before a boom in infrastructure construction transforms urban land cover, according to a study in the Proceedings of the National Academy of Sciences. Researchers at Ya...

  • 外来哺乳动物入侵欧洲

    12-09-05 Alien mammals, including mink, wild boar, racoons, shrews and beavers, have invaded Europe to a greater extent than we thought. 外来哺乳动物,包括貂、野猪、浣熊、鼩鼱和海狸,已经在很大程度上侵入欧洲。 A new study has found that 71 mammal species hav...

  • 旧金山将禁止官员购买苹果电脑

    12-07-11 City officials in San Francisco plan to block local government agencies from buying new Apple Macintosh computers. 旧金山市官员计划阻止政府部门购买新款苹果Macintosh电脑。 The move follows the firm's decision to pull out of a green certification sche...

  • The road of life

    12-06-19 The lives of most men are determined by their enviroment.They accept the circumstances amid which fate has thrown them not only resignation but even with good will. They are like streetcars running contendedly on their rails and they despise the spr...

  • 墨西哥开始实行气候变化法案

    12-06-07 Mexican President Felipe Calderon has signed a law introducing binding targets on climate change. 墨西哥总统费利佩卡尔德隆将一份气候变化约束力目标的法案签署生效。 Mr Calderon said on Twitter that the law would make Mexico the first developing countr...