Cap-and-trade...the biggest tax in history which will severely impact the world economy, all under the false pretense of saving the environment. The stupid thing is aviation only contributes about 2% of global CO2 emissions annually; electricity & heat generation is in the 37% ballpark. Less than a 10% reduction in emissions from this sector alone (easily achieved via solar/wind/hydroelectric generation, or using modern processes at coal-fired power plants) would provide a greater reduction in CO2 emissions than parking every airplane on the planet.
You guys should take a look at the ridiculous hoops an operator has to jump through to register for the EU Emissions Trading Scheme (ETS)...it'd blow your mind.