Friedrich Hayek credited Bruno Leoni with shaping his ideas on laws and legislation. James Buchanan said that Leoni identified problems that led to his own work on public choice. How is it possible, then, that so few of us know of the groundbreaking Italian political philosopher? Listen as Duke economist Michael Munger talks with EconTalk's Russ Roberts about Leoni's ideas and the gruesome murder that ended his life before its time.

An owl will eat a rabbit whole, but owls can't digest the fur or the bones. So how do they survive? Why do their eyes face forward rather than to the side? Long-eared Owls don't have ears, so what's up with the name and how do they hear? How can dogs help us track owls--that seems impossible. Owls don't make nests, so where do they live? Listen as Jennifer Ackerman, author of What an Owl Knows, talks about the book with EconTalk's Russ Roberts, peeling back the feathers to reveal the astonishing biology and behavior of owls, as well as the amazing stories of those who love and study them.

Johns Hopkins surgeon Dr. Marty Makary talks about his book Blind Spots with EconTalk's Russ Roberts. Makary argues that the medical establishment too often makes unsupported recommendations for treatment while condemning treatments and approaches that can make us healthier. This is a sobering and informative exploration of a number of key findings in medicine that turned out to be wrong and based on insufficient evidence.