My question is for the Minister for Climate Change and Energy. Minister, many people in my community are concerned about climate change. Climate scientists are telling us we need a 2030 emissions reduction target of at least 50 per cent to prevent catastrophic climate change, and the Business Council of Australia has said that Australian businesses can thrive under a 46 to 50 per cent reduction by 2030. So my question is: what are the scientific or business reasons for the government's 2030 target of 43 per cent?