The trip that changed Tigran Gambaryan’s life forever was supposed to be short — just a few days. When he flew to Nigeria in February of 2024, he didn’t even check a bag. Tigran is a former IRS Special Agent. He made his name investigating high-profile dark web and cryptocurrency cases. Some colleagues called him the ‘Crypto Wizard’ because of his pioneering work tracing crypto transactions for law enforcement. Since 2021, he’s worked at the world’s largest crypto exchange, Binance.

Tigran was in Nigeria as a sort of envoy. He was supposed to meet with government officials and show them that Binance – and crypto itself – was safe, reliable, and law-abiding.

One of the most important meetings was at the headquarters of the Office of the National Security Advisor. He says officials there made him wait hours. And when officials finally came into the room, they accused Binance of a host of crimes and of tanking the Nigerian economy. They then told Tigran that they weren’t going to let him leave Nigeria until they were satisfied that Binance was going to remedy the situation.

On today’s show, in a collaboration with Click Here from Recorded Future News, we hear about Tigran’s eight month detention in Nigeria. In his first recorded interview after his release, he shares details about his captivity, how he survived one of Nigeria’s most infamous prisons, and how he got out.

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The San Jose was a marvel of 17th century technology. The Spanish galleon weighed more than a thousand tons, was made of wood reinforced with iron, and featured three masts and 64 cannons. In its cargo were gold, silver, silk and porcelain. But in 1708, it sank after a battle with an English ship near what is now Colombia.

For centuries, the shipwreck was the stuff of legends, until 2015 when underwater investigators found what they believed to be the San Jose’s wreckage. The treasure on board this ship could be worth billions of dollars. But who owns it? Today on the show, four groups stake their claims to the wreck of the San Jose. Those claims reveal a lot about who has a say over the bottom of the sea and how we can begin to untangle the complicated legacy of colonialism.

This episode of Planet Money was hosted by Erika Beras and Mary Childs. It was produced by Sam Yellowhorse Kesler with reporting help from Willa Rubin and edited by Keith Romer. It was fact-checked by Sierra Juarez and engineered by Neil Rauch with help from Robert Rodriguez. Alex Goldmark is Planet Money’s executive producer.

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NASA’s Recovery Director discusses the splashdown and recovery process and how she helps to ensure safety, not just for the space travelers, but for all recovery team members. HWHAP 371.  

Finding “the one” can seem like life’s ultimate goal—but should it be? This hour, TED speakers expand the definition of life partnership, whether it’s with a friend, a spouse, a pet, or no one at all. Guest include journalist Rhaina Cohen, marriage and family therapist Stephanie Yates-Anyabwile, social psychologist Bella DePaulo and photographer Elias Weiss Friedman of “The Dogist.”

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Americans spend more on scratch lottery tickets per year than on pizza. More than all Coca-Cola products. Yet the scratch ticket as a consumer item has only existed for fifty years. Not so long ago, the idea of an instant lottery, of gambling with a little sheet of paper, was strange. Scary, even.

So, how did scratch lotteries go from an idea that states wanted nothing to do with, to a commonplace item? It started in a small, super-liberal, once-puritanical state: Massachusetts. Adults there now spend – on average – $1,037 every year on lottery tickets – mostly scratch tickets. On today’s episode, a collaboration with GBH’s podcast Scratch & Win, we hear the story of… the scratch-off lottery ticket!

This episode was hosted by Ian Coss and Kenny Malone. Scratch & Win from GBH is produced by Isabel Hibbard and edited by Lacy Roberts. The executive producer is Devin Maverick Robins. Our version of the podcast was produced by James Sneed. It was edited by Alex Goldmark, engineered by Valentina Rodríguez Sánchez, and fact-checked by Sierra Juarez. Alex Goldmark is Planet Money‘s executive producer.

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On Monday, the stock market went into a tizzy over a new AI model from Chinese company DeepSeek. It seemed to be just as powerful as many of its American competitors, but its makers claimed to have made it far more cheaply, using far less computing power than similar AI apps like ChatGPT, Claude, or Gemini. In one day, hundreds of billions of dollars were wiped off the valuations of companies related to AI.

This week, investors seemed suddenly to change their minds about what our AI future would look like and which companies will (or won’t) profit from it. Will we really need all those high-end computer chips, after all? What about power plants to provide electricity for all the energy-hungry AI data centers?

On today’s show – how DeepSeek might have changed the economics of artificial intelligence forever.

This episode was produced by Willa Rubin with an assist from James Sneed. It was edited by Keith Romer and engineered by Neil Tevault. Research help from Sierra Juarez. Alex Goldmark is Planet Money’s executive producer.

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NASA’s Chief Health and Medical Officer discusses the impacts spaceflight has on the human body and how flight surgeons and other medical professionals on the ground help astronauts mitigate those impacts. HWHAP 370.  

Original broadcast date: February 24, 2023. You don’t need to be big and boisterous to pack a punch. This hour, TED speakers explore the surprising strength of all things minuscule and fleeting. Guests include microbiologist Anne Madden, cognitive scientist Lera Boroditsky, former educator YeYoon Kim and former industrial engineer and Zen Buddhist monk Bart Weetjens.

TED Radio Hour+ subscribers now get access to bonus episodes, with more ideas from TED speakers and a behind the scenes look with our producers. A Plus subscription also lets you listen to regular episodes (like this one!) without sponsors. Sign-up at: plus.npr.org/ted

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When it comes to solar and wind power, renewable energy has always had a caveat: it can only run when the wind blows or the sun shines.

The idea of a battery was floated around to make renewables available 24/7. For years, it existed as an expensive, little-used technology. Then in 2021, it took off.

In this episode, we explore how this new energy market works in two states: California and Texas.

In California, there is now enough grid-scale battery storage to power millions of homes — at least for a few hours — and it’s growing fast. What does this success mean for the grid, and how did the state support it?

Then, we visit Texas, whose approach is more free-market rodeo. The state has the second-most battery storage capacity in the U.S. And in Texas, their system was recently put to the test. So, can these large-scale batteries can help prevent blackouts?

These two stories come from our sister show The Indicator, which recently reported a series about the electric battery market.

Today’s show was hosted by Cooper Katz McKim, Darian Woods and Wailin Wong. The original Indicator episodes were produced by Cooper Katz McKim and Corey Bridges, and edited by Kate Concannon. It was fact-checked by Sierra Juarez and engineered by Jimmy Keeley and Neil Tevault. Alex Goldmark is Planet Money’s executive producer.

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