In 2009, the aviation industry agreed an ambitious set of goals for addressing climate change by dealing with its carbon emissions. The first goal is to deliver a global average annual fuel efficiency improvement of 1.5%. In other words, the combined fleet of commercial aviation aircraft would improve its fuel efficiency by an average of 1.5% per year until 2020, with further goals set to cap net CO2 emissions from 2020 and to halve them by 2050 (based on 2005 levels).
