Australia's government is famous for its lack of interest in climate change. Despite increasing problems from bushfires and droughts, Prime Minister Scott Morrison and his Liberal-led coalition government continue to promote coal-mining and dodge efforts to reduce the country's carbon emissions. It's all the more extraordinary then that one Australian state, governed by Mr Morrison's party is streets ahead of most of the world in its conversion to renewable energy. Peter Hadfield reports from Adelaide on the South Australian miracle. Producer: Alasdair Cross