Read a Conde Nast Traveler article this weekend which suggested that jet engines produce 3.5% of the world’s human generated carbon dioxide.
The same article also stated that auto’s produced 15% of CO2. According to the article, scientists suggest that releasing CO2 at higher elevations is 3x more damaging than discharging them on the ground.
The article didnt provide more evidence…but curious to understand the “why”.
