Scientists are learning a bit more about prehistoric climate change.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/prehistoric-climate-change-clues-unearthed-ancient-caves
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/science-world-report
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/history
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/droughts
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/el-nino
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts