Global climate change caused by our fossil fuel emissions is forcing us to assess many aspects of our behaviour. Flying is a particularly sensitive example because we have become accustomed to hopping on an airplane and dashing off at 700 or 800 kilometres per hour to some foreign country for the taste of another culture, for a change of scenery, for a family gathering, for an exotic adventure, or for a routine business deal. Not only are we destroying the uniqueness of the place that we came to experience by homogenizing the entire planet—the source of Yogi Berra’s oxymoronic comment that, “Nobody goes there any more. It’s too crowded.”—but flying happens to be the single most polluting activity over which any single individual has control. This is because flying is a choice. So the subject of flying and its contribution to the 37.4 billion tonnes of carbon dioxide emissions in 2023, although uncomfortable, deserves some consideration.