With global warming, we can make predictions and then take measurements to test those predictions. One prediction (a pretty obvious one) is that a warmer world will have less snow and ice.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/glacier-loss-accelerating-because-global-warming
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/glacial-melt
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sea-level-rise
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/alaska
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canada
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/russia