Should the United States allow its citizens to buy oil from countries run by bad men? Is this a case where morality trumps the usual case for free trade? Leif Wenar, professor of philosophy at King's College, London and author of Blood Oil, talks with EconTalk host Russ Roberts about the morality of buying resources from countries that use the resulting revenue to oppress their citizens. Based on the ideas in his book, Wenar argues that in many cases, importing oil is equivalent to buying stolen goods where the low prices cannot justify the purchase. The conversation discusses the possible outcomes from banning foreign oil from tyrannical regimes along with the resource curse and the case for fair trade.

What is machine learning? How is it transforming our lives and workplaces? What might the future hold? Pedro Domingos of the University of Washington and author of The Master Algorithm talks with EconTalk host Russ Roberts about the present and future of machine learning. Domingos stresses the iterative and ever-improving nature of machine learning. He is fundamentally an optimist about the potential of machine learning with ever-larger amounts of data to transform the human experience.

Arnold Kling, economist and author, speaks with EconTalk host Russ Roberts about his latest book, Specialization and Trade: A Reintroduction to Economics. Kling argues that macroeconomics ignores the challenges of buyers and sellers working together in the real world of specialization and trade. Instead, most macroeconomic theories struggle to incorporate the differences across workers and products. Kling points the listener toward a different perspective on macroeconomics and the business cycle that focuses on those differences. Kling also lays out related insights on political economy as well as his take on G.A. Cohen's parable of the camping trip.

Alberto Alesina of Harvard University talks with EconTalk host Russ Roberts about his research on fiscal policy and austerity. Alesina's research shows that spending cuts to reduce budget deficits are less harmful than tax increases. Alesina discusses the intuition behind this empirical finding and discusses other issues such as Greece's financial situation.

Gary Belsky, co-author of On the Origins of Sports and former editor-in-chief of ESPN the Magazine, talks with EconTalk host Russ Roberts about the origins of sports--how various sports evolved and emerged into their current incarnations. Along the way he discusses the popularity of American football, the written (and unwritten) rules of sports, and the focus on replay and fairness in modern sports.

Is your success in life your own doing? Robert Frank of Cornell University talks with EconTalk host Russ Roberts about his latest book, Success and Luck. Frank argues that we underestimate the role that luck plays in our success and makes the case for a progressive consumption tax as a way to improve even the welfare of the wealthy.

Will our brains ever be uploaded into a computer? Will we live forever? Richard Jones, physicist at the University of Sheffield and author of Against Transhumanism, talks with EconTalk host Russ Roberts about transhumanism--the effort to radically transform human existence via technology. Jones argues that the grandest visions of the potential of technology--uploading of brains and the ability to rearrange matter via nanotechnology are much more limited and unlikely than proponents of these technologies suggest. The conversation closes with the role of government in innovation and developing technology.

How bad is pink slime? Are free-range chickens happier? Can robots cook? Jayson Lusk of Oklahoma State University and the author of Unnaturally Delicious talks with EconTalk host Russ Roberts about these questions and more from his new book. Lusk explores the wide-ranging application of technology to farming, cooking, protein production, and more.

Why would anyone want to hire a middleman, like a wedding planner, especially if you have time to take care of the planning yourself? Marina Krakovsky, author of The Middleman Economy talks with EconTalk host Russ Roberts about middlemen in the modern economy. Despite predictions that the internet would destroy the need for middlemen, Krakovsky argues they're more valuable than ever though their roles have changed. Krakovsky looks at the different roles middlemen play today and how their value added can justify their existence.

David Autor of MIT talks with EconTalk host Russ Roberts about the fundamentals of trade and his research on the impact on workers and communities from trade with China. Autor's research finds large and persistent effects on manufacturing jobs and communities where those jobs once were. Autor and Roberts discuss whether these results capture the full impact of increased trade with China and what the policy response might be that could help workers hurt by trade.