The poles were once covered by lakes and forests instead of ice. Anil Ananthaswamy finds out what the world was like in the last great warming.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/when-crocodiles-roamed-arctic-0
[2] http://admin.indiaenvironmentportal.org.in/category/author/anil-ananthaswamy
[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
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arctic