The ice sheets covering the Arctic seas have thinned noticeably over the last seven years, most likely as a result of global warming, said a Norwegian explorer who has just skied alone across the top
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/global-warming-skating-thin-ice
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-line-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change