'In the summer of 2019–20 I worked in the customer service department of an Australian zoo. I was used to cycling to work, gliding past traffic and cutting through parklands in my khaki uniform. But I found myself driving much more than usual. Cycling resulted in weariness and respiratory irritation, as I breathed in toxic particulate matter. Bushfire smoke smothered the city, forcing us indoors. With the smoke settling for days at a time, I relied more on my exhaust-spewing vehicle to get to work. The dark irony was hard to miss.' (Introduction)