There are two questions people usually think about when it comes to air travel: can I free my schedule for the trip and how much is the ticket? The reason this happens is because these are the only two criteria directly impacting the person in question. However, there are a few other….
A British physicist called David MacKay was frustrated by the amount of hand waving and vague assertions of “huge amounts of this” and “gigantic amounts of that” which people frequently mention when discussing energy use. He decided to put an end to it so he prepared a framework for people to intelligibly discuss the issues: it comes in form of a brilliant book called Sustainable Energy – Without the Hot Air. The reason the book is brilliant is its basic idea which is to list key energy sources and uses, provide simple models to get rough estimates and in doing so, allow people to get a feel for where we are in terms of energy use and what it means to be sustainable. One of the chapters of the book has something to say about air travel considerations other than time and money.