<p>Quantum computing promises revolutionary new discoveries. But tech revolutions can be messy. Is now the time to start thinking about how we ethically use quantum machines?</p><p>Also, we find out how glass can be turned into useful data storage that will last for thousands of years. And what can science fiction tell us about our spacefaring future? </p><p>Presenter: Chris Vallance Producer: Tom Quinn</p><p>(Photo: An image of a quantum computer inside a high-tech facility. The computer has metallic silver and gold-coloured tubing to assist in cooling. Credit: Getty Images)</p>