Air traffic managers and scientists unveil first conclusions of 2021 contrail prevention live trial in EUROCONTROL MUAC airspace. With two-thirds of the impact of aviation on climate change believed to come from aircraft non-CO2 emissions, contrail prevention has a key role to play in curbing global warming. Since the beginning of 2021, EUROCONTROL’s Maastricht Upper Area Control Centre (MUAC), in partnership with the German Aerospace Center (DLR), have been conducting a first worldwide live operational trial on contrail prevention aimed at mitigating non-CO2 emissions. (....)