Without going into technical details, it seems widely accepted that aviation accounted for around 900 million tons of CO2 emission (CO2E) in 2018 equal to an estimated 2.4% of total global emissions (12% of total transportation-related CO2E), and this number is sadly forecast to triple to more than 2,700 million tons of CO2 by 2050.Despite the fact that airlines have become significantly more fuel efficient, we are experiencing a dramatic growth in total aviation emission as the number of planes flying more hours per day keeps growing much faster than the gains made in fuel efficiency.However, because most of the emission happens at high altitude during the actual flight, the “net emission impact” is considered by experts to be twice that number and then further increased due to the amount of energy that goes into production of aviation fuel.