Global warming may have triggered the unprecedented melting of sea ice in the Arctic, which has left the remaining ice up to a third thinner than it was 20 years ago. Scientists stydying sonar
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/arctic-ice-now-third-thinner-1976
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/bangladesh-observer-dhaka
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change