That's because at 285 grams of CO2 emitted per kilometer per passenger, air travel is more energy intensive than traveling by road (158 grams) or rail (14 grams).
Sometimes it's better to keep your feet on the ground. That's because at 285 grams of CO2 emitted per kilometer per passenger, air travel is more energy intensive than traveling by road (158 grams) or rail (14 grams). If you can, drive or take the train instead. And if you have to fly, fly direct. No layovers.