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Radiolab

Life in a Barrel

03 Apr 2026

Transcription

Chapter 1: What is the main topic discussed in this episode?

1.6 - 27.246 Lulu Miller

Hey, it's Molly Webster. I have a surprise for you. Next month, myself and producer Mona Medgalker are going to do an AMA about our snail sex tape episode. You can ask us anything about snails and the behind the scenes of making an episode work. How long did it take us to make? How did we come up with the sound effects? Why are snails and slugs related? The AMA will be on April 16th.

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27.546 - 53.888 Lulu Miller

And in order to come, you have to be a member of the lab. So go to radiolab.org slash join right now. Sign up. Use the code word snail to get a discount on your membership. And also, if you sign up now, you get a snail enamel pin. If you're already a member of the lab, come to the AMA. Thank you for listening. Can't wait to see you there, April 16th. Hey, it's Molly.

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54.409 - 79.568 Lulu Miller

Before this episode starts, I want to let you in on a little secret, which is that Radiolab is doing an Ask Me Anything about our recent episode, Snail Sex Tape. So the AMA is going to be with myself and our producer, Mona McGowker, who is like a snail expert, a snexpert. And you can ask us anything, how the episode got made, how we came up with the idea. Do snugs really exist?

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79.989 - 104.775 Lulu Miller

So come to the AMA on April 16th. Now, the catch is, in order to come, you need to be a member of the lab. So if you're not a member of the lab, go sign up now, fools, so you can come see us. Go to radiolab.org slash join, radiolab.org slash join. Use code snail so you get a discount on your first year of membership.

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105.236 - 129.532 Lulu Miller

And as a thank you for signing up right now, we will send you an enamel snail pin that we are about to drop. It's very cool. We all want it on our jean jackets. So I can't wait to see you April 16th. And until then, we have a really great episode for you today. It is a story Lulu and Latif reported back in 2022, all about the chaos and messiness of life.

130.052 - 137.141 Lulu Miller

And I'm talking life with a capital L, like the kind that evolution gets involved in. So let's go listen.

138.162 - 141.205 Latif Nasser

Wait, you're listening?

141.225 - 141.666

Okay. All right. Okay.

144.042 - 149.671 Lulu Miller

You're listening to Radiolab from WNYC.

Chapter 2: What surprising experiment involving a barrel does Reinhardt conduct?

732.111 - 754.784 Matt Kielty

In this nutshell of a small ecosystem, nature is chaos, chaos, chaos. What Reinhardt had discovered in this barrel was that this tiny ecosystem, when left to its own devices, was completely chaotic. So what does that mean mean? Like, is that saying it's just booming and busting at random or does that mean? Well, so.

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755.284 - 764.441 Unknown

First of all, maybe I should tell you a little bit about Chaos. Please. Because for most of the people, Chaos is just totally random, but it's not.

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764.461 - 765.804 Matt Kielty

This is Elisa Beninka.

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765.924 - 769.23 Unknown

I'm Elisa Beninka and I'm a theoretical ecologist.

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769.21 - 778.463 Matt Kielty

Reinhart brought her in to analyze his data. And she says the way to think about chaos is not whether it's random or not, but to what extent we can predict what's going to happen.

778.844 - 795.488 Unknown

So actually, chaos is a system which is high predictability on the short run, but cannot be predicted in the long term. And the weather is actually the best example for that. Meteorologists can do forecasts up to two weeks

795.468 - 798.552 Matt Kielty

After that, they're no better than you or I trying to predict the weather.

799.413 - 808.986 Unknown

And in the case of this barrel... Species could be predictable for around 15, 30 days. After that, you couldn't know who is going to be in advantage.

809.266 - 834.074 Matt Kielty

Huh. So it's not like, you know, things are just happening completely randomly for no reason whatsoever. It's just that we, like... Like, it's beyond us to see why things are happening or what's going to happen, which... To Reinhart, you know, suggested, there's no line. There's no circle. Like, harmonious natural balance, that's all BS.

Chapter 3: How does chaos theory relate to the findings in Reinhardt's barrel experiment?

2548.774 - 2557.523 Matt Kielty

The theory had been floating around, but it had never been tested. Yeah, and so Stanley was like, okay, I'm going to test this out. He took his little cauldron, filled it with all these gases.

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2557.783 - 2570.835 Candice Wong

There's like ammonia, hydrogen, methane, all those things that people thought were in the early atmosphere. And... Then he was like, OK, I'm going to create a little storm. And he zapped it.

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2571.476 - 2573.7 Matt Kielty

Like a bolt of the early Earth's lightning.

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2574 - 2587.866 Candice Wong

Yeah, lightning, basically. And he's watching the cauldron for only a day. And then he finds that it starts turning a little pinkish. And he's like, oh, my goodness. Like, is there something going on here? And then a week later, it turns deep red.

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2588.048 - 2613.6 Matt Kielty

turbid red like smoky red yeah it's like rusty blood red water that's collecting at the bottom oh the water's becoming red i see i see yeah so it is kind of like a little like red soup at the bottom so he pulls this red borscht out of the cauldron and he looks to see what's in there and he finds amino acids amino freaking acids wow the stuff of life

2617.192 - 2634.593 Matt Kielty

So, like, does anyone know what an amino acid is? It's the ingredients of DNA, right? Well, no, but it is the ingredients of pretty much everything else in the cell. So the little motors and enzymes and all the stuff that actually makes a cell work.

2634.854 - 2643.714 Heather Radke

Yes. Amino acids, the building blocks of life. So it was a kind of a... Almost a meme as an experiment. It's a beautiful experiment.

2643.794 - 2644.976 Matt Kielty

So this is Nick Lane.

2645.076 - 2648.704 Heather Radke

Professor of evolutionary biochemistry at University College London.

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