How can the state of Colorado have nearly 700 sides? Why is a country's coastline as long as you want it to be? And how is it that your UPS driver has more routes to choose from than there are stars in the universe? Listen as mathematician Paulina Rowinska talks with EconTalk's Russ Roberts about the mathematical tricks hiding in plain sight with every map we use. From the Mercator projection that warped how we see the world to the London Tube map that reinvented urban navigation, they discuss how distorting geography shapes our ability to navigate reality.

What if we could delay--or even prevent--Alzheimer's, cancer, and heart disease? What if much of what you know about aging is wrong? Listen as cardiologist and author Eric Topol of the Scripps Research Institute talks about his new book Super Agers with EconTalk's Russ Roberts. They discuss why your genes matter less than you think, how your immune system can help prevent cancer and Alzheimer's, and why a simple shingles vaccine could reduce the risk of dementia. From the surprising anti-inflammatory powers of Ozempic to the critical importance of deep sleep for brain detoxification, Topol shares insights that can extend your healthy lifespan.

Does technology liberate us or enslave us? How do our social interactions affect our sense of self and our emotional health? Listen as author and master teacher Leon Kass and EconTalk's Russ Roberts do a close reading of a few paragraphs of Jean-Jacques Rousseau and explore some of the deepest aspects of our relationships with each other and with our technology.