The decision by cargo airline comes as a surprise, as the proposed tax comes into existence only in 2013.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/royal-jordanian-breaks-ranks-levy-carbon-tax
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economic-times-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-tax
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/european-union-eu
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/brazil
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-transport