Harvard economist Claudia Goldin and Steve talk about how inflexible jobs and family responsibilities make it harder for women to earn wages equal to their male counterparts. But could Covid actually level the playing field?

He’s the award-winning author of hugely popular books like Guns, Germs, and Steel; Collapse; and Upheaval. But Jared actually started his varied career as an expert on gallbladders and birds. The physiologist turned geographer talks with Steve about his brushes with death, why the Norse Greenlanders wouldn’t eat fish, and why he has never been invited to a cannibal ceremony.

He’s tried to shake up the status quo — as a Democratic presidential candidate, a New York City mayoral candidate, and now the founder of the Forward party. Will his third try be the charm? Andrew talks with Steve about what it’s like to lose an election and why a third political party might be the best chance for avoiding a new civil war. 

Everyone agrees that massive deforestation is an environmental disaster. But most of the standard solutions — scolding the Brazilians, invoking universal morality — ignore the one solution that might actually work. Originally released on Freakonomics Radio, Steve gives an update on what’s happened in the two years since this episode first ran. 

He’s an M.I.T. cosmologist, physicist, and machine-learning expert, and once upon a time, almost an economist. Max and Steve continue their conversation about the existential threats facing humanity, and what Max is doing to mitigate our risk. The co-founder of the Future of Life Institute thinks that artificial intelligence can be the greatest thing to ever happen to humanity — if we don’t screw it up.

How likely is it that this conversation is happening in more than one universe? Should we worry more about Covid or about nuclear war? Is economics a form of “intellectual prostitution?” Steve discusses these questions, and more, with Max, an M.I.T cosmologist, physicist, and machine-learning expert — who was once almost an economist. He also tells Steve why we should be optimistic about the future of humanity (assuming we move Earth to a larger orbit before the sun evaporates our oceans).

He’s a pioneer of using randomized control experiments in economics — studying the long-term benefits of a $1 health intervention in Africa. Steve asks Edward, a Berkeley professor, about Africa’s long-term economic prospects, and how a parking-ticket-scandal in New York City led to a major finding on corruption around the world.

Playing notes on her piano, she demonstrates for Steve why whole numbers sound pleasing, why octaves are mathematically imperfect, and how math underlies musical composition. Sarah, a professor at the University of London and Gresham College, also talks with Steve about the gender gap in mathematics and why being interested in everything can be a problem. 

His childhood dream of playing in the N.B.A. led him to a career as a referee. Marc is one of the league’s top performers after over 20 seasons, but he still reviews every single one of his calls. He talks with Steve about being scrutinized by players, fans, and management; how much work — and data — go into being fair; and why he talks about race with his colleagues and his kids.

It was only in his late twenties that America’s favorite brainiac began to seriously embrace his love of trivia. Jeopardy!’s newest host also holds the show’s “Greatest of All Time” title. Steve digs into how Ken trained for the show, what it means to have a "geographic memory," and why we lie to our children.