This article was first published, in abridged form, by Ethical Consumer. If global aviation emissions were a country, it would be ranked 7th in the list of global emitters, between Germany and South Korea. Yet aviation is the only means of transportation that doesn't pay a penny of tax on the fuel it burns. This is an unfair advantage that airlines have over trains, coaches and cars, making it the fastest growing form of transport while also being the most carbon intensive. All of this is to the benefit of rich chaps, as, contrary to common public myth about low cost flights, air travel is one of the least democratic forms of moving from A to B.