The economist Joseph Stiglitz has devoted his life to exposing the limits of markets. He tells Steve about winning an argument with fellow Nobel laureate Milton Friedman, why small governments don’t lead to more freedom, and why he’s not afraid to be an advocate.

Monica Bertagnolli went from a childhood on a cattle ranch to a career as a surgeon to a top post in the Biden administration. As director of the National Institutes of Health, she’s working to improve the way we find new treatments — despite regulatory constraints and tight budgets.