Global warming has been going on for so long that most people were not even born the last time the Earth was cooler than average in 1985 in a shift that is altering perceptions of a "normal" climat
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/most-us-global-warming-has-become-normal-climate
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/reuters
[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/heat-waves
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/droughts
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/extreme-weather-events
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/world-meteorological-orgnisation-wmo