Daily Mail: All those free drinks, lie-back seats and extra perks have an unexpected cost that can't be charged to the company expenses account. First class air passengers are much more damaging to the environment than the average traveler, according to new research. The paper (PDF), published in May, explains that those who enjoy first class service have a carbon footprint that is over nine times larger than the humble passenger crunched up in coach class. Luxury: But first class passengers have a much higher...