As an environmental engineer, I understand natural processes, and I also know that human activity has a significant impact on climate and the environment. So the question is: what are we going to do about it? Declare a climate emergency. And now? Well, local government are already putting in place plans to mitigate climate change risks, to respond to sea-level rise. Local governments are already putting plans in place with infrastructure, rezoning land, and to reduce building risks. The climate change Minister has the emissions trading scheme (ETS) and the Climate Change Commission. That Minister has the power to set the price of carbon through the ETS. He could set it at $50 a tonne or $100 a tonne—whatever price he chooses. That Minister has the greatest influence on the behaviour of business and consumers than any other Minister in Government. 