We may trigger hyperwarming that transforms the planet into a hothouse with tropical temperatures and lush forests close to the poles.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/hyperwarming-climate-could-turn-earths-poles-green
[2] http://admin.indiaenvironmentportal.org.in/category/author/michael-marshall
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming