There has been an explosion in Silicon Valley tech start-ups putting their money behind anti-ageing science. They're working to halt and one day maybe reverse the one inevitability of our human existence – and they've the backing of names like Google and Jeff Bezos. It raises long lists of moral and ethical questions – is it for the greater good or the next frontier for the billionaires whose only limit is their mortality?On this special bonus episode of Sky News Daily, Sky's science and technology editor Tom Clarke speaks to producer Jess Breadman about the quest to live forever. For more on the future of science join Sky News specialists and industry leaders at Big Ideas Live – our interactive event offering you the chance to join the conversation as we ask: Who owns the future?https://news.sky.com/story/big-ideas-live-returns-see-whats-happening-and-how-you-can-get-involved-12724341 Producer: Emma Rae Woodhouse Editor: Philly Beaumont