Experts urged to ratify Minamata Convention to phase out mercury-added products পারদযুক্ত পণ্যের ব্যবহার বন্ধে মিনামাতা কনভেনশন অনুমোদনের আহ্বান সেন্টমার্টিন সৈকতে প্লাস্টিকের আগ্রাসন 72 birds die eating pesticide-treated masakalai Educate girls to save the planet শিশুর সর্দি-কাশি সারানোর ঘরোয়া উপায় 50 Books All Kids Should Read Before They’re 12 24 thousand under 5 children die of pneumonia in Bangladesh annually গ্রিনহাউস গ্যাস কমানোর লক্ষ্যে নানা উদ্যোগ Maldives: Eco-friendly product export destination for Bangladesh

New Man-Made Gases Found in Atmosphere: Threat to Ozone Layer


Scientists have discovered new gases which are responsible for depletion of ozone layer. The researcher from the University of East Anglia has presented this discovery to the media. According to the researchers, among the four new gases the three gases are CFCs’ and another one is HCFC. Researchers suggested that the sources of these gases are anthropogenic, as they were not found in the air sample of 1960. As modern air sample researchers tested the air of remote Cape Grim Tasmania through polar firn analysis. These gases are building up in a rapidly and although there concentrations are low now they will be a contributing factor in ozone depletion, scientists predicted. The concerning fact due to their unknown source immediate mitigation steps are not possible and in addition, even if emissions are stopped  the affect will remain for a long period of time.

Author: Matt McGrath

Source: BBC News

Link: http://www.bbc.com/news/science-environment-26485048

Posted by on Mar 11 2014. Filed under News at Now. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

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