How do you save a region from an economic tailspin? For this Money Talks, Felix Salmon chats with Paul Collier, author of The Bottom Billion and, most recently, Left Behind: A New Economics for Neglected Places. They discuss the economic and political forces that drag countries and regions to the bottom — and how they might be saved. Paul gives examples across time and geography, from Cold War-era Germany to modern-day Africa. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get an ad-free experience across the network and an exclusive bonus mini-episode with every regular episode of Slate Money! You’ll also be supporting the work we do here on Slate Money. Sign up now at slate.com/moneyplus to help support our work. Podcast production by Jared Downing and Cheyna Roth. Learn more about your ad choices. Visit megaphone.fm/adchoices