Kings and emperors spent fortunes pursuing the secret of eternal youth - but now it's tech billionaires who want to live forever and are funding research into scientific (and not-so-scientific) ways to beat aging and death. Kara Swisher (host of CNN's new series Kara Swisher Wants to Live Forever ) joins Jacob and Robert to discuss the longevity business - from ancient China, via yoghurt enemas and blood swaps, to the latests developments in DNA editing. We also find out how Kara wants to die. Write to us at businesshistory@pushkin.fm See omnystudio.com/listener for privacy information.