It’s said that aviation only contributes around 2.5% to global CO2 emissions. So is it a relatively minor activity in terms of its effect on climate change? Flying is one of the most emissions-intense activities an individual can undertake. Also, CO2 is only part of the picture. Due to the effects of vapour trails and other aviation gases in the upper atmosphere, the sector actually accounts for around 3.5% of global warming.
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