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Aviation has an impact on the environment due to aircraft engines emitting noise, particulates, and gases which contribute to climate change and global dimming.〔 〕 Despite emission reductions from automobiles and more fuel-efficient (and therefore less polluting) turbofan and turboprop engines, the rapid growth of air travel in recent years contributes to an increase in total pollution attributable to aviation. In the EU, greenhouse gas emissions from aviation increased by 87% between 1990 and 2006. At present aviation accounts for 2% of global CO2 emissions and this is projected by the IPCC to rise to 3% by 2050. This presents the operators of aircraft with a responsibility to reduce emissions. == Methods of mitigating aviation’s CO2 emissions == Mitigation of aviation's environmental impact can be achieved through a variety of measures, the most obvious and arguably the most economical of which is to reduce the fuel burn of the aircraft as this accounts for 28% of an airlines costs. However, there is a wide variety of other options available to minimise aviation's growing impact upon the environment as are listed below:〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mitigation of aviation's environmental impact」の詳細全文を読む スポンサード リンク
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