The FIFA World Cup is the world's largest single-event sporting competition, so it only makes sense that FIFA wants to project what the carbon footprint of the 2014 World Cup in Brazil will be.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/fifa-offset-2014-world-cup-carbon-footprint
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/environment-news-network
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/brazil
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-harvesting
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/leds