On May 9, the government of Alberta released a study into the extra carbon emitted by crude produced using oil sands instead of more conventional sources.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/canadas-oil-sand-battle-europe
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/planet-ark-australia
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/canada
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/europe
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/european-union-eu
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/saudi-arabia
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/venezuela
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kyoto-protocol
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/economy