Two (Totally Opposite) Ways to Save the Planet (Ep. 346)

The environmentalists say we’re doomed if we don’t drastically reduce consumption. The technologists say that human ingenuity can solve just about any problem. A debate that’s been around for decades has become a shouting match. Is anyone right?

How to Be Happy (Ep. 345)

The U.N.’s World Happiness Report — created to curtail our unhealthy obsession with G.D.P. — is dominated every year by the Nordic countries. We head to Denmark to learn the secrets of this happiness epidemic (and to see if we should steal them).

Who Decides How Much a Life Is Worth? (Ep. 344)

After every mass shooting or terrorist attack, victims and survivors receive a huge outpouring of support — including a massive pool of compensation money. How should that money be allocated? We speak with the man who’s done that job after many tragedies, including 9/11. The hard part, it turns out, isn’t attaching a dollar figure to each victim; the hard part is acknowledging that dollars can’t heal the pain.

A Conversation With PepsiCo C.E.O. Indra Nooyi (Ep. 316 Update)

One of the world’s biggest and best-known companies just announced that its C.E.O. would be stepping down in the fall. We interviewed her as part of our series “The Secret Life of a C.E.O.," and we thought you might like to hear that episode again, or for the first time if you missed it back then.

An Astronaut, a Catalan, and Two Linguists Walk Into a Bar… (Ep. 343)

In this live episode of “Tell Me Something I Don’t Know,” we learn why New York has skinny skyscrapers, how to weaponize water, and what astronauts talk about in space. Joining Stephen J. Dubner as co-host is the linguist John McWhorter; Bari Weiss (The New York Times) is the real-time fact-checker.

Has Lance Armstrong Finally Come Clean? (Ep. 342)

He was once the most lionized athlete on the planet, with seven straight Tour de France wins and a victory over cancer too. Then the doping charges caught up with him. When he finally confessed to Oprah, he admits, “it didn’t go well at all.” That’s because he wasn’t actually contrite yet. Now, five years later, he says he is. Do you believe him?

Why We Choke Under Pressure (and How Not To)

It happens to just about everyone, whether you’re going for Olympic gold or giving a wedding toast. We hear from psychologists, economists, and the golfer who some say committed the greatest choke of all time.

FULL TRANSCRIPT: Interview With Jean Van de Velde

Here is the full transcript of our interview with the golfer Jean Van de Velde as featured in the Freakonomics Radio episode “Why We Choke Under Pressure (and How Not To).”

People Aren’t Dumb. The World Is Hard.

You wouldn’t think you could win a Nobel Prize for showing that humans tend to make irrational decisions. But that’s what Richard Thaler has done. The founder of behavioral economics describes his unlikely route to success; his reputation for being lazy; and his efforts to fix the world — one nudge at a time.

The Future of Freakonomics Radio

After 8 years and more than 300 episodes, it was time to either 1) quit, or 2) make the show bigger and better. We voted for number 2. Here’s a peek behind the curtain and a preview of what you’ll be hearing next.