Eleven years of university with the last 5 on sustainability. Quit flying 10 years ago, but began reducing flights 20 years ago. The evidence has long been available on the effects of flying (see the Heathrow expansion reports for a recent example). Have worked in every primary resource industry in British Columbia, then went to do post-grad study on the effects of resource extraction and use on the environment and social structures. Culminated in 5 year program to study sustainability.