This week I am enjoying Greek salads with feta cheese, morning swims in the sea, and lazy afternoons in the sun. I am in Cyprus, a country whose tourism sector’s greenhouse emissions per capita are the sixths largest in the world. And it’s not the Cypriots who are to blame, rather the troops of tourists (including me) that fly into the Mediterranean island to enjoy their holidays in luxurious hotel rooms kept cool by batteries of air conditioners. Thanks to a new study, for the first time ever we now have a comprehensive overview of the footprint of global tourism. And it’s not a pretty picture, rather an inconvenient truth (to use Al Gore’s words).