Since September 2019, bush fires in Australia have consumed 10 million hectares of land – an area almost the size of England. People have died, homes have been destroyed. The annual season of fires has begun earlier and lasted longer than ever before. Many see it as evidence of climate change, though the government says it’s not as simple as that. Condemned by its Pacific neighbours for inaction, does Australia’s former Ambassador for the Environment fear his nation is becoming a climate pariah?