Last January, a study in Nature Climate Change showed the world's glaciers are the smallest they've been in human history, revealing radiocarbon material that hasn't been exposed for 40,000 years.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/melting-glaciers-contribute-third-sea-level-rise
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/national-geographic-news
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/glacial-melt
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sea-level-rise
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/greenland
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/antarctica