Prime Minister Scott Morrison has long suggested Australia can do little to influence the Earth's changing climate because its emissions make up just 1.3 per cent of the world total. The imputation, by extension, is we're too small to make a difference. Such arguments have been made possible ' in part ' thanks to the international carbon accounting methodology most commonly used to apportion greenhouse gas emissions to individual countries. Some say Australia is doing its fair share to tackle climate change, given it accounts for just 1.3 per cent of global carbon dioxide emissions. But depending on the accounting method, however, that number could be much higher.