U.S. airlines operating in the domestic market showed a wide gap in fuel efficiency, with Alaska Airlines taking the top ranking, according to a study by an independent, nonprofit organization.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/us-airlines-show-wide-gap-fuel-efficiency-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/planet-ark-australia
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-efficiency
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-transport