 We've been hearing a lot about hydrogen and how it can help us reach net zero. But at the moment, hydrogen is actually quite a dirty business. At the moment we make it from coal and gas, and this accounts for around 2% of global greenhouse gas emissions. There are other ways to make it though. So the first way that you might have heard is called blue hydrogen. In this case, we use carbon capture and storage technologies to capture some of the emissions that are released during processing of hydrogen with natural gas. However, this is not a perfect solution, as some of the gas actually still is released to the atmosphere, and there are still issues with methane leakages while processing natural gas itself. There is another way of generating hydrogen that is very relevant for Australia, and that is green hydrogen. Green hydrogen is produced by electrolyzing water using renewable energy, that is solar and wind, something that we have an abundance of in Australia.