CARBON DIOXIDE is the main greenhouse gas emitted by human activities. But it is not the only gas capable of causing great harm to people and the planet.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tunnel-vision-0
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economist-london
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/methane
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-gas
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gas-leakages
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/greenhouse-gases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us