The flight shaming movement has raised our awareness of air travel’s contribution to climate change. With all the discussion, you might be surprised to learn that air travel globally only accounts for about 3% of the warming human activities are causing. Why all the fuss? Before I explain, I should come clean. I am writing this on the train from Christchurch to Kaikoura, where I will give a talk about my recent book #NoFly: walking the talk on climate change. I have some skin in this game. Taking a train around New Zealand is no mean feat. In the North Island, the train between Auckland and Wellington runs only every second day.