男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

您現(xiàn)在的位置: Language Tips> Audio & Video> China Daily Audio News  
 





 
Biofuels 'speed up' global warming
[ 2007-09-29 14:04 ]

Download

Most crops grown in the United States and Europe to make "green" transport fuels actually speed up global warming because of the industrial farming methods, says a report by Nobel prize - winning chemist Paul J. Crutzen.

The findings could spell particular concern for alternative fuels derived from rapeseed, used in Europe, which the study concluded could produce up to 70 percent more greenhouse gases than conventional diesel.

The study suggested scientists and farmers focused on crops, which required less intensive farming methods, to produce better benefits for the environment.

Biofuels are derived from plants that absorb the planet-warming greenhouse gas carbon dioxide as they grow, and are meant as a climate-friendly alternative to fossil fuels.

But the new study shows that some biofuels actually release more greenhouse gases than they save, because of the fertilizer used in modern farming practices.

The problem greenhouse gas, nitrous oxide, is more famous as the dentists' anesthetic "laughing gas", and is about 300 times more insulating than the commonest man-made greenhouse gas carbon dioxide.

"The nitrous oxide emission on its own can cancel out the overall benefit," co-author Professor Keith Smith said.

The results, published in "Atmospheric Chemistry and Physics Discussions", were based on the finding that fertilizer use on farms was responsible for three to five times more greenhouse gas emissions than previously thought.

They cast further doubts on the credibility of biofuels as a climate cure, following the revelation of other unintended side effects such as rainforest clearance and raised food prices, from competition with forests and food for land.

(China Daily 09/29/2007 page 11)

(英語點津 Linda 編輯)

About the broadcaster:

Marc Checkley is a freelance journalist and media producer from Auckland, New Zealand. Marc has had an eclectic career in the media/arts, most recently working as a radio journalist for NewstalkZB, New Zealand’s leading news radio network, as a feature writer for Travel Inc, New Nutrition Business (UK) and contributor for Mana Magazine and the Sunday Star Times. Marc is also a passionate arts educator and is involved in various media/theatre projects in his native New Zealand and Singapore where he is currently based. Marc joins the China Daily with support from the Asia New Zealand Foundation.

 
 
相關文章 Related Stories
 
         
 
 
 
 
 
         

 

 

 
 

48小時內最熱門

     
  Unit 7 - Everyday Activities 日常活動
  別“找麻煩”!
  英國:外國留學生要學學排隊
  小心別“泄密”
  WAGS 太太和女朋友

本頻道最新推薦

     
  女孩的心思誰能猜:Suspended from class
  《說點什么吧》:Say something anyway
  Mountain and cowboy culture meet in Jackson Hole
  Livestock disease spreads in Britain
  Working magic in the garden with beans

論壇熱貼

     
  “凈臉聯(lián)盟”兩周年——迎國慶特別活動啟動
  how to translate“三局兩勝”
  知青 農(nóng)民工 怎么翻譯
  "魅力城市" 英文怎么說?
  請教:統(tǒng)一口徑的譯法
  Mountain Story 大山的故事






主站蜘蛛池模板: 尚义县| 五华县| 双鸭山市| 黎平县| 剑河县| 雅江县| 灵寿县| 屏山县| 莱州市| 屏南县| 当涂县| 应用必备| 唐海县| 内乡县| 宁化县| 宿迁市| 峡江县| 崇义县| 新竹县| 安福县| 金寨县| 兴安县| 太白县| 仁化县| 盱眙县| 龙岩市| 怀化市| 南华县| 休宁县| 石台县| 塘沽区| 中超| 方城县| 蒙山县| 杭锦旗| 秀山| 通辽市| 社旗县| 佳木斯市| 延安市| 宣城市|