通过诉讼推动环境公正——美国加利福尼亚州与南非的比较

美国加利福尼亚州（以下称加州）法律明确将环境公正规定为：“在制定执行环境法律法规政策时,公平对待所有种族文化背景与经济收入的人。”环境工作的关键就是执法,而执法的条件是要有明确的法律,有执法的意愿,并有充足的人力资源起诉环境违法行为。诉讼在保证环境公正中正在起着越来越明确的角色。     

携手保护河流健康

萨凡纳河是南卡罗来纳州和佐治亚州的分界线,流域面积达2．7万平方公里。该河流有着多种多样的生态系统,庇护着超过75种珍稀动物和植物,为大约100种鱼类提供了栖息地,是美国东南部鱼群种类最为丰富的水域。水系中还有数量众多的淡水蛤贝,已发现9个珍稀种群。     

Responses of benthic insect communities to effluent from the abandoned Ferris-Haggarty copper mine in southeast Wyoming, USA

This study provided information about the benthic insect communities that are present in the impacted reaches of Haggarty Creek.     

Application of the AERMOD modeling system for environmental impact assessment of NO2 emissions from a cement complex

We applied the model of American Meteorological Society-Environmental Protection Agency Regulatory Model (AERMOD) as a tool for the analysis of nitrogen dioxide (NO2) emissions from a cement complex as a part of the environmental impact assessment. The dispersion of NO2 from four cement plants within the selected cement complex were investigated both by measurement and AERMOD simulation in dry and wet seasons. Simulated values of NO2 emissions were compared with those obtained during a 7-day continuous measurement campaign at 12 receptors. It was predicted that NO2 concentration peaks were found more within 1 to 5 km, where the measurement and simulation were in good agreement, than at the receptors 5 km further away from the reference point. The Quantile- Quantile plots of NO2 concentrations in dry season were mostly fitted to the middle line compared to those in wet season. This can be attributed to high NO2 wet deposition. The results show that for both the measurement and the simulation using the AERMOD, NO2 concentrations do not exceed the NO2 concentration limit set by the National Ambient Air Quality Standards (NAAQS) of Thailand. This indicates that NO2 emissions from the cement complex have no significant impact on nearby communities. It can be concluded that the AERMOD can provide useful information to identify high pollution impact areas for the EIA guidelines.     

聚焦沙漠

全球性的经济危机重创了许多行业,但与此同时低碳化潮流却又孕育着新的市场机遇,其中可再生能源无疑是耀眼的亮点。风险投资者在用恐慌心理窥测这场经济危机可能造成的恶果的同时,也不会放弃捕捉新的赚钱机会。实际上,一场太阳能土地争夺战已经席卷了美国西南部的沙漠地带。     

“寒冬”里的一抹暖色

在当前许多发达经济体普遍处于政治、经济严冬期的非常时刻,在不太让人看好的德班气候大会前夕,一些组织和国家的低碳行动和创意还是在严寒里点亮了一盏绿色明灯。     

中国应对气候变化的绿色机遇

受到"排挤"的德班会议联合国气候大会即将在南非港口城市德班召开。但是,当前世界经济尚未从2008年的金融危机的阴影中走出来,且又遭到经济衰退的二次探底的冲击。美国总统大选在即但失业率居高不下、经济增长乏力;欧盟财政危机四伏、欧元区面临新的挑战;日本     

全美奥杜邦学会

全美奥杜邦学会(National Audubon Society)成立于1886年,是世界上同类组织中历史最悠久的非赢利性民间环保组织,这一组织是为纪念美国鸟类学家、博物学家和画家约翰·詹姆斯·奥杜邦而命名.学会在美国各地都设有分支机构,这些机构经常组织观鸟等与野生动物保护有关的野外活动.     

环球

海洋环境剧烈变化导致大批海洋生物灭亡 美国科学家日前对外发出预警,污染和全球变暖正在将全球海洋推向一处极为危险的边缘——大部分海洋生物已经处于灭绝的边缘,甚至某种物种一旦灭绝,未来数千万年间都不会再出现。美国海洋国际规划的工作人员近日在回顾最近的海洋科学时发现,现在的海洋健康要比几年前所谓的可怕预测还要更“虚弱”,     

基因工程打造“生物激光器”

据英国《每日邮报》报道,美国科学家们宣布他们成功制成了全世界首个“生物激光器”,这是一种基因工程处理过的特殊细胞,它能产生激光束。