As we approach the Australian federal election, our new podcast series is exploring how much power and influence Gina Rinehart has in this country. She is a success story, worth almost $40bn. She’s also a climate sceptic, a Trumpette, a litigant – even against her own kids – and the woman who saved Australian swimming. Reged Ahmad speaks to senior correspondent and the host of this new series, Sarah Martin, to ask: who is Gina Rinehart, and what does she want? Listen and subscribe to the Gina Podcast at theguardian.com/gina