Sir, living in East Anglia I rarely get to treat airline crew, but for practitioners in the vicinity of London airports, they may have noticed an increased interest in dental matters among this group, and I could be to blame. I love my work but when on holiday or away for a weekend, I try and forget dentistry with one exception: air travel. This is a great opportunity to catch up on CPD, especially the non verifiable variety. For example on a recent long haul flight, I read three BDJs and two other dental publications and, as always, left them behind for the crew, which I guess must be a welcome change for them from Hello and OK. However, I have a dilemma as to what to do when I fill out my record sheet — Activity: read BDJ — no problem! However, venue: somewhere over Greenland?