What’s CRISPR Doing in our Food?

You've probably heard the hype: CRISPR will revolutionize biotech, cure disease, resurrect extinct species, and even create new-and-(not-so)-improved humans. But what is CRISPR—and what's it doing in our food? The first generation of genetically modified crops, or GMOs, were labelled "Frankenfoods" by critics and are banned in the European Union. Can CRISPR succeed where fish-tomatoes failed? And what's yoghurt got to do with it? Listen in this episode for the CRISPR story you haven't heard—and for a taste of our CRISPRized future.

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Happy Birthday to Us: Gastropod Turns Five

We launched Gastropod in September 2014, which means we're turning five this month, and that's approximately 100 in podcast years. We're celebrating our birthday with a special episode featuring highlights from the past five years’ worth of episodes, as chosen by you, our listeners—served up alongside a generous slice of cake science and history. Join the party and listen in now as we revisit fan favorites and behind-the-scenes highlights from our first half-decade, and then sit down with this souvenir list: 25 of our favorite fun facts from Gastropod, or five for each of the five years we’ve been making the show!

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Celebrate Mexico’s True National Holiday with the Mysteries of Mole

In the United States, Cinco de Mayo is an excuse for margarita-fueled partying. But in Mexico, that date—the anniversary of a military triumph over Napoleon on May 5, 1862—is marked by a parade and not much else. The real celebrations happen on September 16, which is Mexican Independence Day. At Gastropod, we're always down to party, so here's to Mexico's true national holiday—and its true national dish: mole! But what is mole? Listen in this episode as we trace mole's complicated evolution from medieval Moors to the invention of the blender, and from something that had been considered peasant food to a special occasion showstopper.

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Running on Fumes: Strawberry’s Dirty Secret

This episode, we tell an age-old tale: an innocent young berry heads west to make its fame and fortune—but sells its soul in the process. In order for our hero, the strawberry, to defeat its nemesis, a fungus called wilt, the aromatic red fruit makes a deal with the devil—and duly becomes America's favorite berry. But its success relies on fumigants, toxic gases injected into the soil that kill everything in their path. So what are fumigants; what's their effect on farm workers, local communities, and the environment; and can the strawberry break free of their poisonous grip? Listen in this episode to find out!

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Omega 1-2-3

Based on all the hype, you'd be forgiven for believing that the fish oils known as omega-3s are solution to every problem. Heart disease, dementia, depression, even obesity—the list of ailments that experts claim a daily dose of omega-3 can help prevent seems endless. And with more than ten percent of Americans taking a capsule of fish oil daily, omega-3s are one of the most profitable supplements in the world, too. Listen in this episode, as author Paul Greenberg and scientist JoAnn Manson help us figure out what these supposedly miracle molecules are, and what consuming them is doing to our bodies—and to our oceans.

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Meet Sharbat, the Ancestor of Sorbet, Syrup, Shrub, Sherbet, and Pretty Much Everything Else Cool

Many of you won't have heard of sharbat, the delightfully tangy, refreshingly icy Persian drink. But most of you will have tasted at least one of its many descendants: sorbet, sherbet, syrup, shrub, and even the julep. So, what is sharbat? How did it inspire so many variations on cooling deliciousness? And how did Persians manage to make ice in the middle of the desert—thousands of years before the invention of mechanical refrigeration? Find out while keeping cool in this special episode of Gastropod, sponsored by McCormick.

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Super Fry: The Fight for the Golden Frite

Shoestring, waffle, curly, or thick-cut: however you slice it, nearly everyone loves a deep-fried, golden brown piece of potato. But that's where the agreement ends and the battles begin. While Americans call their fries "French," Belgians claim that they, not the French, invented the perfect fry. Who's right? This episode, we take you right into the heart of the battle that continues to be waged over who owns the fry—who invented it, who perfected it, who loves it the most? And then we take you behind the scenes into another epic fight: the struggle for the perfect fry. Can food scientists create a fry with the ultimate crispy shell and soft inside, one that can stay that way while your delivery driver is stuck in traffic? Plus, the condiment wars: does mayo really have the edge over ketchup? Listen in now to find out!

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Eat This, Not That: The Surprising Science of Personalized Nutrition

This episode, we've got the exclusive on the preliminary results of the world's largest personalized nutrition experiment. Genetic epidemiologist Tim Spector launched the study, called PREDICT, to answer a simple but important question: do we each respond to different foods differently? And, if so, why? How much of that difference is genetic, how much is due to gut microbes, and how much is due to any one of the dozens of other factors that scientists think affect our metabolic processes? You’ve heard of personalized medicine, will there be such a thing as personalized diets? And should there be? Can teasing out the nuances of how each individual body processes different foods make us all healthier? To find out, we signed ourselves up as study participants, sticking pins in our fingers, weighing our food, and providing fecal samples, all for science—and for you, dear listeners. Listen in now as we take part in this ground-breaking study, discover our own differences, and find out the early results!

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Guts and Glory

What does it mean when your stomach rumbles? How do our bodies extract nutrients and vitamins from food? Does what you eat affect your mood? Digestion is an invisible, effortless, unconscious process—and one that, until recently, we knew almost nothing about. On this episode of Gastropod, we follow our food on its journey to becoming fuel, from the filtered blood that helps slide food into the stomach, to the velvet walls and rippling choreography of the small intestine, to the microbial magic of the colon and out the other end. And we do it by visiting the world's most sophisticated artificial gut at dinner time—a plumbing marvel named TIM that chews, swallows, squeezes, farts, and poops just like the real thing.

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BONUS: Introducing Science Rules! with Bill Nye

We interrupt our regular programming to bring you news of a new podcast you might like. Bill Nye is on a mission to change the world—one phone call at a time. On his new podcast, Science Rules!, he tackles your questions on just about anything in the universe. Perhaps you’ve wondered: Should I stop eating cheeseburgers to combat climate change? How often should I really be washing my pillowcase? Can I harvest energy from all those static-electricity shocks I get in the winter? Science Rules! is out NOW—find it in your favorite podcast app.