AEROSPACE
Passenger numbers are rising, and with it a realisation that growth cannot be sustained without reducing greenhouse gas and other emissions.
Aviation contributes around six per cent of UK emissions and this is expected to rise to 25% by 2050, according to the Aviation Environment Federation (AEF).
The same organisation says aviation is responsible for 2-2.5 per cent of global man-made CO2 emissions, and is expected to grow to between 4 and 15 per cent by 2050.
In the world’s airports, the International Air Transport Association recorded a 4.2 per cent rise in global passenger traffic in 2019, and overall numbers are expected to grow by 70 per cent by 2050.