Our weekly news round-up: Study confirms flies are an oft overlooked vector for disease transmission; Uber admits in 2016 it covered up a big hack of 57m users' data and paid off hackers to delete it; Calls for glitter and other sources of microplastics to be banned; Reading out loud to yourself shown to boost memory; Humpback dolphins indulge in gift giving; Aussie judge presses VW on why emissions cheating software was installed on its cars; Perth set for test of Uber-style driverless cars; Magnesium battery technology offers safety advantages over conventional lithium ion; Amazon officially launches in Australia - challenges local retailers.