MORE ON CELEBRITY CARBON FOOTPRINTS: “How are the chattering classes going to cope with this kind of scrutiny? If you travel frequently by air, even on commecial flights, you can’t escape having a huge carbon footprint. Yet many of the most vocal advocates of cutting emissions — politicians, environmentalists, journalists, scientists — are continually jetting off to campaign events and conferences and workshops. Are they going to change the way they operate? If not, how are they going to persuade anyone else to cut back emissions? (My advice to the peripatetic preachers: Do not try explaining why your work is more important than everyone else’s.)”