Peter Van Doren, a self-proclaimed science nerd, comes back to the show today to talk about the role of science in the policy world.

Terence Kealey joins the show today to talk about how the government is nearly the single buyer of scientific research.

Many political leaders consider wealth inequality to be a major economic and social problem. Ryan Bourne and Chris Edwards join the show to talk about their new study that tackles this issue.

Christopher Preble and John Glaser join the show to discuss Trump’s approach, or lack thereof, to foreign policy. 

Richard Rothstein joins the episode to discuss how the American government systematically imposed residential segregation. 

Patrick G. Eddington comes back to the show to talk about his time in the CIA from 1988 to 1996. 

Bryan Caplan and Zach Weinersmith join the show today to talk about their non-ficton graphic novel; Open Borders: The Science and Ethics of Immigration. 

Catherine Wilson teaches us that there is more to Epicureanism than eating, drinking, and being merry.

Deirdre McCloskey joins our show again to talk about her new book, Why Liberalism Works: How True Liberal Values Produce a Freer, More Equal, Prosperous World for All. 

Clay Routledge joined the show today to talk about how our society has become increasingly individualistic, and how we are still learning the consequences of that.

While people in the US have the first world privilege to complain about wasting time on their phones, millions of people in the developing world are using their cellphones to pull themselves out of poverty. 

David Starkey explains the origins of the UK Parliament so that we can understand how it differs from the U.S. government. 

Frank Dikötter, an expert on Chinese communism, joins the show to talk about the nature of dictatorships. 

Helena Rosenblatt and Daniel Klein debate the origin of liberalism. 

Dan Moller joins the show to discuss how libertarian philosophy includes more substance than a devotion to individual liberty.

Timothy Sandefur returns to the show to talk about his new book, The Ascent of Jacob Bronowski: The Life and Ideas of a Popular Science Icon. 

Arnold Kling is welcomed back to the show to talk about the new edition of his book, The Three Languages of Politics, and how it is even more relevant in the Trump era. 

Susan Schneider joins the show to challenge our preconceived notions of consciousness and whether machines can achieve it.