Babbage: Taxis for take-off

Flying taxis could soon become commonplace in cities if operators can overcome strict regulations on their use. Journalist Rebecca Fannin explores the future of technology giants in China. And, how can the sound of sand reveal its source? Kenn Cukier hosts

extra music by Chris Zabriskie “Divider” (CC by 4.0 UK)


 

See acast.com/privacy for privacy and opt-out information.