I have always been extremely conscious of my carbon footprint. When I taught in university about 25 years ago, I used to have to commute by plane to live with my wife – it was insane. Since my retirement I have cut down on travel radically – rarely leaving the Comox Valley, British Columbia, where I live and do do my research. Now that conferences can be organized and attended by web-video I have no longer any motivation to use transportation. Have not taken a plane or even a train for the past 4 years.