So the next time your standing in a bar talking to someone with tales of uncountable foreign lands which they visited in the space of months, marvelling at the iPhone photos of the indigenous folk of some low lying land in the South Pacific and the curious creatures of a tropical outland, are you going to coo and admire said authentic waffle and photographic jamboree or are you going to poise to ask the poignant question of whether they realised that the flights they took to said exotic places are cumulatively destroying those exact paradises by continuing their unsustainable travelling behaviour even in the face of stark and widely available fact??