She’s best known for playing neurobiologist Amy Farrah Fowler on The Big Bang Theory, but the award-winning actress has a rich life outside of her acting career, as a teacher, mother — and a real-life neuroscientist. Steve Levitt tries to learn more about this one-time academic and Hollywood non-conformist, who is both very similar to him and also quite his opposite.

We all know our political system is “broken” — but what if that’s not true? Some say the Republicans and Democrats constitute a wildly successful industry that has colluded to kill off competition, stifle reform, and drive the country apart. So what are you going to do about it?

We explore the science, scalability, and (of course) economics surrounding the global vaccine race. Guests include the chief medical officer of the first U.S. firm to go to Phase 3 trials with a vaccine candidate; a former F.D.A. commissioner who’s been warning of a pandemic for years; and an economist who thinks Covid-19 may finally change how diseases are cured.

A new interview show with host Steve Levitt. Today he speaks with the Harvard psychologist and linguist Steven Pinker. By cataloging the steady march of human progress, the self-declared “polite Canadian” has managed to enrage people on opposite ends of the political spectrum. Levitt tries to understand why.

What happens when tens of millions of fantasy-sports players are suddenly able to bet real money on real games? We’re about to find out. A recent Supreme Court decision has cleared the way to bring an estimated $300 billion in black-market sports betting into the light. We sort out the winners and losers.

The endless pursuit of G.D.P., argues the economist Kate Raworth, shortchanges too many people and also trashes the planet. Economic theory, she says, “needs to be rewritten” — and Raworth has tried, in a book called Doughnut Economics. It has found an audience among reformers, and now the city of Amsterdam is going whole doughnut.

Aisle upon aisle of fresh produce, cheap meat, and sugary cereal — a delicious embodiment of free-market capitalism, right? Not quite. The supermarket was in fact the endpoint of the U.S. government’s battle for agricultural abundance against the U.S.S.R. Our farm policies were built to dominate, not necessarily to nourish — and we are still living with the consequences.

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

Most Americans agree that racial discrimination has been, and remains, a big problem. But that is where the agreement ends.

The racial wealth gap in the U.S. is massive. We explore the causes, consequences, and potential solutions. Also: another story of discrimination and economic disparity, this one perpetrated by an international sporting authority. The first of a two-part series.