Sia is donating $70,000 (£54,000) to Australians experiencing hardship amid the Covid-19 pandemic.The Greatest hitmaker announced the initiative on radio station Nova FM last month, and, true to her word, hosts Ryan 'Fitzy' Fitzgerald and Michael 'Wippa' Wipfli confirmed on Monday that nominations were open for a portion of the fund.Sia, who was born in Adelaide and now resides in Los Angeles, announced the donation during the radio duo's 'We've got your back' segment, sharing: "You can decide