Business: Why rent seeking costs us all, vertical farming

Business commentator Rebecca Stevenson joins Kathryn to talk about rent seeking - the act of a business or individual increasing their wealth without adding any value. She'll look at who's doing it, how they're doing it and why we're all paying for it. She'll also talk about the giant hydroponic vertical farm that's opened its doors in Dubai. Rebecca Stevenson is a senior writer at interest.co.nz.