According to the Intergovernmental Panel on Climate Change, aviation (domestic and international) accounts for approximately 2 per cent of global CO₂ emissions produced by human activity. In 2015, approximately 65 per cent of global aviation fuel consumption was from international aviation (see ICAO 2019 Environmental Report); applying this share to CO₂ emissions, international aviation is responsible for approximately 1.3 per cent of global CO₂ emissions.