A New York Times article (Sept 26, 2011) describes new European rules that restrict airline emissions to 97 % of their emissions from 2004-2006 with a free emissions 85 % of this limit. This number will drop to 95 % by 2013-20 with the free limit dropping to 82 %. The emissions not free will be generated by trading with other industries.  Should the European Union have the right to restrict emissions for all nonEuropean carriers who fly to Europe ? Is the claim that an increase in free emissions frees up cash to invest in new airplanes reasonable in the associated time frame ? Can the estimated ticket cost impact of $ 2 to $ 12 euros per ticket be expected to hurt airline demand ?