Hong Kong taxi drivers are getting older. What happens when they retire? Is a busy city like Hong Kong ready for driverless cars? Insurance and insurability in a climate change world, and what companies are doing about it. And how climate change is all most of us have ever known. This week on Switched On we have a wide-ranging discussion with Nathaniel Bullard, BNEF's Head of Executive Insights and author of a weekly opinion piece called Sparklines.  This episode is based on the weekly Sparklines series from Bloomberg Opinion, by Nat Bullard. You can sign-up here:  http://link.mail.bloombergbusiness.com/join/4wm/sparklines-signup&hash=b9b2681361bede0e1069ca238efb1ec2  Or on Bloomberg Anywhere at NI BULLARD.  Switched On is hosted this week by Mark Taylor and Dana Perkins.See omnystudio.com/listener for privacy information.