Air travel has become increasingly accessible, and by 2030, the number of aircraft in the skies is expected to rise from about 25,000 to nearly 40,000 annually. Equally, the number of passengers flying annually is expected to nearly double in the next 20 years, with over four billion more people flying annually by 2036, according to the International Air Transport Association (IATA). This surge in air travel raises significant concerns about climate change.