At the dawn of time Lord Vishnu made gods and demons join in churning the milky oceans to extract an elixir of eternal life.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/unholy-woes
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economist-london
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/madhya-pradesh
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kumbh-mela
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/narmada
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ujjain-t
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/irrigation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water-scarcity
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drought