Scott Morrison's government is criticised for its inaction on climate change. When Australia - long considered a climate policy laggard – holds an election on 21 May, the outcome could be significant for the planet's future. Still reliant on coal for most electricity, it is one of the dirtiest countries per capita, making up over 1% of global emissions with only 0.3% of the world's population. It is also a massive supplier of fossil fuels globally; when that is factored in, it accounts for 3.6% of the world's emissions. Australia is most at risk from climate change, having recently suffered severe drought, historic bushfires, successive years of record-breaking floods, and six mass bleaching events on the Great Barrier Reef. It is racing towards a future full of similar disasters. Climate policy played a role in toppling three prime ministers in a decade. Most voters want tougher climate action, but some coal towns in swing constituencies are key to winning elections.