How Salt Built America

This week, Felix Salmon, Emily Peck, and Elizabeth Spiers chat with Ed Conway, economics and data editor of Sky News, whose new book “Material World” tells how a handful of everyday resources built civilization — and remain incredibly important today. Also: the astounding secrets of car paint…and why new cars look like mud. Podcast production by Patrick Fort and Jared Downing. Learn more about your ad choices. Visit megaphone.fm/adchoices