a recent report of the us government claims that a programme has been remarkably successful in reducing summertime emissions of nitrogen oxides (nox)
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tall-claim
[2] http://admin.indiaenvironmentportal.org.in/category/author/lopamudra-banerjee-dhar
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/emissions-trading
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-science