Oobleck! What happens when you mix cornstarch and water : Wow in the World It's swim time in the neighborhood, and Mindy is getting ready to fill her pool! Will she fill it with a liquid, a solid, or both?! Join Mindy, Guy Raz, and Dennis as they explore a rule defying non-newtonian fluid that's full of surprises! It's the Who, What, When, Where, Why, How, and Wow in the world of Oobleck!
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Oobleck! Make Up Your Mind!

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Oobleck! Make Up Your Mind!

Oobleck! Make Up Your Mind!

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(SOUNDBITE OF SONG, "THE GOLDEN AGE (WOW IN THE WORLD PODCAST THEME SONG)")

UNIDENTIFIED PERSON #1: Stay seated. Three, two, one - ignition.

UNIDENTIFIED PERSON #2: Get ready for an adventure of magnificent proportion.

THE POP UPS: (Singing) I don't know what you've been told, but we're in a golden age - so many discoveries that are jumping off the page. Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world.

UNIDENTIFIED PERSON #3: With Guy and Mindy.

UNIDENTIFIED PERSON #1: We're on our way, Houston.

GUY RAZ, HOST:

OK. Let me just start up my science meditation app here. There we go. OK, let's get mindful.

UNIDENTIFIED ACTOR #1: (As character) Welcome to Meditation Matters, the only meditation app that really matters. Now let's focus on our breath and on matter.

RAZ: Matter.

UNIDENTIFIED ACTOR #1: (As character) Matter is all around us - solids, liquids, gases.

RAZ: Solids, liquids, gas - it's all matter.

UNIDENTIFIED ACTOR #1: (As character) That's right. It all matters.

RAZ: Huh?

UNIDENTIFIED ACTOR #1: (As character) Oh, nothing. You are a solid, a human being with a definite size and shape.

RAZ: I am a solid.

UNIDENTIFIED ACTOR #1: (As character) And flowing through your body are liquids. Liquids have a definite size but no definite shape. Flow - flow with your liquids.

RAZ: I am flowing with liquids.

UNIDENTIFIED ACTOR #1: (As character) Yes, you are. You are also full of gas.

RAZ: I am full of gas. Wait. What?

UNIDENTIFIED ACTOR #1: (As character) There is gas inside of you. Your gas has no definite size or shape. Let's release it. Release your gas, Guy Raz.

RAZ: Wait a minute. How do you know my name?

UNIDENTIFIED ACTOR #1: (As character) It doesn't matter. All that matters is matter. Just relax. And free your bodily gases, free them like a smelly breathe, free as a ghost made of poop.

RAZ: I am not going to...

MINDY THOMAS, HOST:

OK, back her up, boys.

(SOUNDBITE OF BEEPING)

RAZ: Mindy.

UNIDENTIFIED ACTOR #1: (As character) Now breathe deeply.

RAZ: How do you turn this thing off?

THOMAS: No, a little to the left. No, the other left.

RAZ: Mindy, what is all that noise? I can't even meditate peacefully on my own microdeck.

THOMAS: Right there. And dump.

RAZ: Mindy. Mindy.

THOMAS: Oh. Hey, Guy Razzie. Come on over and get a load of this. (Laughter).

RAZ: Whoa. What in the...

THOMAS: Isn't it amazing?

RAZ: Mindy, what are you doing? Why are you filling up your pool with baby powder?

THOMAS: This is not baby powder, Guy Raz. What you're looking at here is 220,000 pounds of grade A cornstarch.

UNIDENTIFIED ACTOR #2: (As character) OK, Mindy. Cornstarch is in the pool. Is there anything else you want us to destroy before we go?

THOMAS: Nope, that'll do it. Thanks, boys.

UNIDENTIFIED ACTOR #2: (As character) OK, fellas. Back her up. We're done here.

RAZ: Huh. Mindy, when you told me last week that you were planning to get your pool ready for the season, this is not at all what I had envisioned.

THOMAS: I know. I know. You were expecting me to fill my pool with chocolate or syrup or chocolate syrup.

RAZ: Actually, we had a neighborhood bet going, and my money was on refried beans.

UNIDENTIFIED ACTOR #3: (As Dennis) My money was on chocolate syrup.

RAZ: Ugh.

THOMAS: But if you thought I was going to fill my pool with beans, then you clearly don't know me at all.

RAZ: Well, to be fair, you're always full of surprises.

THOMAS: Guy Raz, this year I have decided to fill my pool with the shiny, creamy, milky white mixture of cornstarch mixed with water; in other words, fine oobleck.

UNIDENTIFIED ACTOR #3: (As Dennis) Excuse me. Could you please speak up? It's difficult to eavesdrop when you speak so quietly.

RAZ: You're filling your pool with a non-Newtonian fluid?

THOMAS: Well, I can't think of any Newtonian, so...

RAZ: Mindy, Mindy - water. Water is a Newtonian fluid, and it works great in pools.

THOMAS: Oh, yeah. Water. Huh.

UNIDENTIFIED ACTOR #3: (As Dennis) Seriously, I can't hear. What are you two talking about? What's a Ron flutonial nuid (ph)?

RAZ: A non-Newtonian fluid is a fluid that doesn't behave in the way you would expect it to.

THOMAS: Yeah. And this non-Newtonian fluid known as oobleck is a big scientific trickster 'cause one minute it'll look like a liquid, and the next minute it's acting like a solid.

RAZ: Right. So in terms of matter, non-Newtonian fluids have properties or characteristics of both liquids and solids.

THOMAS: Yeah. And what I love about non-Newtonian fluids is that they don't play by the rules; at least they don't play by the rules of matter. Liquid, solid, gas...

(SOUNDBITE OF FLATULENCE)

RAZ: Mindy.

THOMAS: (Laughter) Sorry. Sorry.

RAZ: Ugh.

THOMAS: Ahem. The non-Newtonian fluid cannot be labeled as just one type of matter. They like to keep things complicated.

UNIDENTIFIED ACTOR #3: (As Dennis) Ooh. Like Avril Lavigne?

THOMAS: Dennis.

RAZ: Mindy. Mindy, I'm telling you right now that if you fill your pool with a non-Newtonian fluid like oobleck, well, you're going to be very, very sorry.

THOMAS: Oh. Hey, Guy Raz. Can you give me a hand here?

RAZ: Sure. What do you need?

THOMAS: If you could just hold this garden hose over my pool here while I run over to your house to turn on the faucet. Run, run, run...

RAZ: My house?

THOMAS: Is it on?

RAZ: Yes. Yes, it's on. Now, as I was saying earlier, water - the Newtonian fluid that's about to come out of this garden hose - is a much, much better fluid for a swimming pool.

THOMAS: Yep. And just keep holding that hose right over the pool.

RAZ: And the reason it's a better fluid is because its viscosity, or how thick or thin it is, stays the same no matter what happens.

THOMAS: But where's the surprise in that?

RAZ: There is no surprise, Mindy. That's the point. Water is constant and consistent. You can shake it. You can squeeze it, turn it upside down or even jump in it and the water will always behave the same way - like a liquid, a nice, thin liquid.

THOMAS: Uh-huh. Can you let me know when the pool is overflowing?

RAZ: Ahh (ph). Mindy, you filled this entire pool with oobleck.

THOMAS: Run, run, run, run. No, you filled the entire pool with oobleck, Guy Raz. Before you added the water with that hose you're holding, it was just a pool with a bunch of cornstarch at the bottom.

RAZ: Mindy.

THOMAS: (Laughter). So you were saying?

UNIDENTIFIED ACTOR #3: (As Dennis) Hi, Mindy. Hi, Guy. Ooh, what are you swimming in? Milk?

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Like Cleopatra.

THOMAS: Actually, Dennis, it's a mixture of cornstarch and water called oobleck.

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, like that Dr. Seuss book, "Bartholomew and the Oobleck."

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Yeah, me and Reggie just covered that one in our book club.

(SOUNDBITE OF BIRD COOING)

RAZ: And I was just telling Mindy that filling her swimming pool with a non-Newtonian fluid like oobleck is a terrible idea.

THOMAS: Terrible or unpredictable?

UNIDENTIFIED ACTOR #3: (As Dennis) I'll be the judge of that. Let me just slowly get into the pool here. Oh, that's cold. Ooh. Ooh. Oh, but very creamy. Are you sure this isn't milk?

THOMAS: See? Creamy. It's perfect for swimming in.

RAZ: Hey, Dennis. Why don't you scoop some of that creamy oobleck into your hands and squish it together?

UNIDENTIFIED ACTOR #3: (As Dennis) No problem. Let me just - ew. What is this? Paste? Mindy, am I swimming in paste - again?

(SOUNDBITE OF BIRD COOING)

RAZ: Still think it's perfect for swimming in, Mindy?

UNIDENTIFIED ACTOR #3: (As Dennis) Looks like I'm going to have to eat my way out of here.

(SOUNDBITE OF BIRD COOING)

RAZ: Dennis, why don't you roll that pasty oobleck between the palms of your hands?

UNIDENTIFIED ACTOR #3: (As Dennis) OK. Oh, look - it's turning into a ball. I made a rubbery ball. Oh, I know. I'll turn this whole pool into a ball pit.

(SOUNDBITE OF BIRD COOING)

RAZ: Now, gently hold that ball in the palm of your hand.

UNIDENTIFIED ACTOR #3: (As Dennis) All right. I mean, seems a little boring, even for you, Guy - Oh, my ball. It's melting. Meatball, no - I named him. Meatball, no.

THOMAS: Aww, Dennis.

UNIDENTIFIED ACTOR #3: (As Dennis) We were going to be best friends and go Rollerblading on the boardwalk.

(SOUNDBITE OF BIRD COOING)

THOMAS: Oh, speaking of Rollerblades, what do you think would happen if Dennis were to - I don't know - Rollerblade across the pool?

RAZ: Rollerblade? I'm not even sure he'd be able to swim in this pool.

UNIDENTIFIED ACTOR #3: (As Dennis) That's just because I can't swim. But, you know, I want to try this Rollerblading idea.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) It might work.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Yeah-huh.

THOMAS: Here's the thing, Guy Raz. Since this oobleck is a non-Newtonian fluid, its viscosity - or thickness - changes depending on how much force is put on it.

RAZ: Wait. You didn't tell me you already knew this.

THOMAS: You never asked.

RAZ: Ugh. So you filled your pool with oobleck knowing full well what would happen when people got in?

THOMAS: Oh, yeah. I was inspired to fill my pool with oobleck after I read this really interesting study on the stuff from a team of engineers at MIT.

UNIDENTIFIED ACTOR #3: (As Dennis) MIT? What's that? From that old children's rhyme?

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) You know. Am I coffee? Am I tea? M-I-S-S-I-S-S-I-P-P-I.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Well, what's MIT, then?

RAZ: Oh, that's the Massachusetts Institute of Technology.

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, that MIT.

(SOUNDBITE OF BIRD COOING)

THOMAS: Anyhoo (ph), the engineers created this computer model that could predict the exact moment when oobleck would change from a liquid to a solid and then back to a liquid after force was applied to it.

UNIDENTIFIED ACTOR #3: (As Dennis) OK, here I go.

(SOUNDBITE OF BIRD COOING)

RAZ: Like the force that would come from someone Rollerblading through a swimming pool full of oobleck?

UNIDENTIFIED ACTOR #3: (As Dennis) The harder I try to Rollerblade through this stuff, the harder it is to Rollerblade. It's like some sort of life lesson.

(SOUNDBITE OF BIRD COOING)

THOMAS: So what's happening right now, Guy Raz, is that Dennis is putting so much bodily force on the oobleck that it's actually transforming from a liquid to a solid right before our very eyes.

UNIDENTIFIED ACTOR #3: (As Dennis) Ooh, I'm like a wizard.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Reggie, let me have this.

RAZ: So as Dennis puts pressure or force on the oobleck, its viscosity goes from being thin, like a flowing liquid, to thick, like a nonmoving solid.

UNIDENTIFIED ACTOR #3: Uh-oh. Aah. I'm stuck. I'm stuck in the goo. Help. I can't move, and I'm going to need to pee soon.

RAZ: Mindy, Mindy, we have to save him. We have to get him out of your pool.

(SOUNDBITE OF BIRD COOING)

RAZ: What's Reggie saying, Mindy?

(SOUNDBITE OF BIRD COOING)

THOMAS: He says he's a trained lifeguard.

(SOUNDBITE OF BIRD COOING)

THOMAS: But he's on his lunch break right now. So...

RAZ: What?

THOMAS: Just kidding.

UNIDENTIFIED ACTOR #3: (As Dennis) Reggie, save me.

(SOUNDBITE OF BIRD COOING)

RAZ: Whoa. Look how swiftly Reggie was able to swoop in at the first sign of stickiness.

UNIDENTIFIED ACTOR #3: (As Dennis) Reggie, don't land on me.

THOMAS: Grab hold of Reggie's feet, Dennis, so he can pull you out of the oobleck.

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, I see. OK. OK, I'm holding on.

RAZ: Come on, Dennis. You can do it.

THOMAS: Ooh, easy does it, Reg. Careful with your force. Not too fast.

UNIDENTIFIED ACTOR #3: (As Dennis) I can't hold on any longer.

THOMAS: You did it, Reg.

(SOUNDBITE OF BIRD COOING)

THOMAS: Reggie, you're our hero.

RAZ: Dennis, you're safe. You're out of the oobleck.

UNIDENTIFIED ACTOR #3: (As Dennis) Hugs?

RAZ: Maybe later.

THOMAS: Nope. Uh-uh. No way.

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, I get it. I'm covered in oobleck. I mean, look at me. I'm dripping with it.

THOMAS: Dennis, why don't you go rinse yourself off a little?

UNIDENTIFIED ACTOR #3: (As Dennis) Good idea.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) No, Reggie, you can't spray me with the hose.

(SOUNDBITE OF BIRD COOING)

RAZ: Mindy, Mindy, what happened in there?

THOMAS: Well, first, you filled my entire swimming pool with Oobleck. And then Dennis jumped in and tried to rollerblade through it. And...

RAZ: No, no, I mean, what happened with the oobleck? How exactly does a non-Newtonian fluid like cornstarch mixed with water go from being a liquid to becoming a solid?

THOMAS: Well, I could tell you...

RAZ: Yes?

THOMAS: ...But I'd rather show you.

RAZ: No way. I am not getting into that pool of goop.

(SOUNDBITE OF BIRD COOING)

THOMAS: OK, fine. Here. Just put on these magnifying goggles. And I'll bring the goop to you, OK? Walk, walk, walk, walk, walk, walk, walk. Walk, walk, walk, walk, walk, walk. There we go. Now, before you take a look at that oobleck under the goggles, I want you to compare this tiny grain of sand with this single particle or grain of cornstarch.

RAZ: Whoa. The cornstarch is so much smaller than the grain of sand. In fact, according to these magnifying goggles, it's 100 times smaller than the grain of sand.

THOMAS: Yeah. And because the particles of cornstarch are so teeny-tiny, they're way more affected by things like temperature and electric charges between them.

RAZ: And those electric charges can either attract particles, pulling them together, or repel particles, pushing them apart.

THOMAS: Exact-oritos. And because the cornstarch grains are so small, the electric charges build up between them and start repelling or pushing the particles away from each other.

RAZ: So if you're moving slowly, the grains will push apart and slide past each other like a fluid.

THOMAS: Yeah. So, like, when Dennis slowly climbed into the pool, the oobleck felt like a creamy liquid.

RAZ: OK.

THOMAS: But when Dennis started freaking out and trying to roller blade through the pool with all of his force and might...

RAZ: His quick and forceful movements made it so the grains couldn't repel or push apart, even if they tried.

THOMAS: Right. Not only could they not repel, but they touched, and that touching caused friction forcing the grains to bunch together like a solid.

RAZ: But when Reggie slowly and carefully lifted Dennis out of the pool, the oobleck went back to acting like a liquid.

THOMAS: Pretty wow, huh?

UNIDENTIFIED ACTOR #3: (As Dennis) I'm back.

RAZ: How did you get so big?

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, well, it's a combination of strength training and bulking, which is...

THOMAS: Guy Raz, you're still wearing the magnifying goggles.

RAZ: Whew. Wait. Dennis, why are you wearing my bathing suit?

UNIDENTIFIED ACTOR #3: (As Dennis) What - you mean this navy-blue three-piece suit made out of spandex?

RAZ: Yes, that's my formal bathing suit.

UNIDENTIFIED ACTOR #3: (As Dennis) Well, my swimsuit was covered in goop, so I went next door and found this in your closet.

RAZ: My closet? Dennis, I had that bathing suit custom made.

UNIDENTIFIED ACTOR #3: (As Dennis) Well, I assume you did, Guy Raz. I mean, what company is going to mass produce this thing?

RAZ: What?

THOMAS: Wait. Does that bathing suit have elbow patches?

RAZ: It has UV-protective elbow patches to protect my sensitive elbows from the sun's ultraviolet rays.

UNIDENTIFIED ACTOR #3: (As Dennis) Interesting.

(SOUNDBITE OF BIRD COOING)

THOMAS: OK. Well, before we have Dennis give you back your bathing suit, Guy Raz, I wanted to try one more quick experiment with my pool full of oobleck.

RAZ: You know, I think we've had enough experimenting for today.

(SOUNDBITE OF BIRD COOING)

THOMAS: Dennis, I see that you're still wearing your rollerblades.

UNIDENTIFIED ACTOR #3: (As Dennis) Well, they match the suit.

THOMAS: I wanted to see if maybe we could make history by having you, Dennis, be the first neighborhood snoop in the world to successfully rollerblade across the length of an Olympic-sized swimming pool.

(SOUNDBITE OF BIRD COOING)

RAZ: You want Dennis to get back into that goopy pool wearing my bathing suit?

THOMAS: Yes, of course I don't want Dennis to get back in the pool, Guy Razzie.

RAZ: Whew, OK.

THOMAS: I want him to get on the pool.

GUY RAZ, MINDY THOMAS AND UNIDENTIFIED ACTOR #3: What?

RAZ: Mindy, Mindy, did you forget what happened the last time Dennis attempted to rollerblade in the pool? He had to be rescued by a pigeon.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) What do you mean, I owe you one?

THOMAS: Dennis, why don't you roll on over to the diving board here?

UNIDENTIFIED ACTOR #3: (As Dennis) Oh, at what speed?

THOMAS: Just - I don't know - normal speed.

UNIDENTIFIED ACTOR #3: (As Dennis) OK. Kind of boring, but OK.

RAZ: Are you sure this is a good idea, Mindy?

THOMAS: Yes, of course I'm not sure this is a good idea, Guy Razzie. You ready, Dennis?

UNIDENTIFIED ACTOR #3: (As Dennis) Yeah. Just let me climb up on the diving board here. Whoa, whoa, easy does it.

(SOUNDBITE OF MUSIC)

UNIDENTIFIED ACTOR #4: (As character) Attorneys for WOW IN THE WORLD would like to remind all listeners that inline skating on a diving board is never, ever, ever, ever, ever, ever, ever a good idea. This message was paid for and approved by the Don't be a Dennis Foundation.

(SOUNDBITE OF MUSIC)

UNIDENTIFIED ACTOR #3: (As Dennis) OK. Up on the diving board. Now what?

THOMAS: OK, on the count of three, you are going to jump feet first onto that pool of oobleck. But first, Guy Raz, we're going to need you to test the waters, so to speak.

RAZ: What?

THOMAS: Just, you know, swish your hand around in the oobleck a little to see if it's acting like liquid or a solid.

RAZ: Well, since there's no force being put on the oobleck, I'm going to predict that it's in its liquid state or that at least it'll behave like a liquid.

THOMAS: And I'm going to predict that as soon as Dennis jumps into that pool of liquid oobleck, the force from his body will overcome the electric charges that were pushing the particles of cornstarch apart and instead force them to bunch together, turning that liquid oobleck into a solid.

UNIDENTIFIED ACTOR #3: (As Dennis) Mindy, are you positive it's going to turn into a solid?

THOMAS: There's only one way to find out. On the count of three.

GUY RAZ AND MINDY THOMAS: One, two, three, jump.

THOMAS: Geronimo. Whoa. Look at me. I'm rollerblading across an Olympic-sized pool.

(SOUNDBITE OF BIRD COOING)

RAZ: What in the...

THOMAS: Go, Dennis. This is bonkerballs.

RAZ: It's like the oobleck is turning into a solid right beneath his feet.

THOMAS: Only to turn back into a liquid as soon as he passes. And it's all because of the force of his roller blades changing the viscosity or thickness of the oobleck.

RAZ: This is unbelievable, Mindy.

UNIDENTIFIED ACTOR #3: (As Dennis) Whoo. That was awesome.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) I don't think these will fit you, Reggie.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: All right. Fine.

(SOUNDBITE OF BIRD COOING)

RAZ: So you mentioned that the team of engineers at MIT made a computer model to predict when oobleck would turn from a liquid to a solid. But what are they planning to do with that information?

THOMAS: Oh, well, they're hoping that their research can help the world with all sorts of things - like potholes, you know, those big, giant, gaping holes that form and roads. And then we run over them with our cars and motor pickles.

RAZ: Huh. So these engineers are thinking that filling potholes with oobleck might help to fix them?

THOMAS: Yeah. I mean, it wouldn't be the craziest idea anyone's ever had.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED ACTOR #3: (As Dennis) Guy, Mindy, look.

(SOUNDBITE OF BIRD COOING)

RAZ: What in the...

UNIDENTIFIED ACTOR #3: (As Dennis) Reggie's wearing my rollerblades and skating across the pool of oobleck, which I call the poobleck.

RAZ: Wow. Such grace, such form, Reggie.

(SOUNDBITE OF BIRD COOING)

THOMAS: Beautiful, Reg - just beautiful, like a majestic eagle floating on a sea of non-Newtonian fluid.

(SOUNDBITE OF BIRD COOING)

UNIDENTIFIED CHILD #1: WOW IN THE WORLD will be right back. Grown-ups, this message is for you.

That's it. Back to the show.

(SOUNDBITE OF SONG, "THE GOLDEN AGE (WOW IN THE WORLD PODCAST THEME SONG)")

THE POP UPS: (Singing) Wow in the world.

(SOUNDBITE OF DIALING PHONE)

THOMAS: Hi. Thanks for calling WOW IN THE WORLD. After the beep, get ready to record.

(SOUNDBITE OF BEEP)

MADDEN: Hi, Mindy and Guy Raz. My name is Madden (ph), and I'm from Seattle, Wash. My wow in the world is that when you see white on a computer screen, it's actually made up of pixel that is red, blue and green. Isn't that crazy? Say hi to Reggie...

(SOUNDBITE OF BIRD COOING)

MADDEN: ...The sleigh cats...

(SOUNDBITE OF CATS MEOWING)

MADDEN: ...And the Static Man.

UNIDENTIFIED ACTOR #3: (As Static Man, laughter).

MADDEN: Bye.

(SOUNDBITE OF BEEP)

TOMAS: Hi, Mindy and Guy Raz. I'm Tomas (ph), and I live in Sacramento, Calif. And my wow in the world is that black holes aren't actually holes; they're round objects with a lot of mass that can bend light.

(SOUNDBITE OF BEEP)

ZOEY: Bonjour. I'm Zoey (ph) from Vancouver, B.C., Milky Way galaxy. My wow in the world is that a dog can smell a teaspoon of sugar dissolving in an Olympic-sized swimming pool. And Chili (ph), my dog, says hi. Bye.

(SOUNDBITE OF BEEP)

DJUNA: Hi, my name is Djuna (ph) from Minneapolis, Minn. My wow in the world is that female pigs and dogs know the scent of truffles. And truffles grow underground so it's hard for us to find them, but female pigs and dogs can help us with that job. Hi, Reggie. Hi, Grandma G-Force.

UNIDENTIFIED ACTOR #5: (As Grandma G-Force) Buongiorno.

(SOUNDBITE OF BIRD COOING)

DJUNA: Hi, Thomas Fingerling.

UNIDENTIFIED ACTOR #6: (As Thomas Fingerling) 'Sup?

(SOUNDBITE OF BEEP)

RENNICKS: Hi, Mindy and Guy Raz. My name is Rennicks (ph), and I live in Denver, Colo. My wow in the world is that roly-polies turn bright blue when they are sick.

(SOUNDBITE OF BEEP)

SOPHIE AND HENRY: Hi, Mindy and Guy Raz.

SOPHIE: My name is Sophie (ph).

HENRY: My name is Henry (ph).

SOPHIE: And we live in Seattle, Wash.

HENRY: Our wow in the world is...

SOPHIE: The world's tallest bamboo grows as high as a 10-story building.

(SOUNDBITE OF BEEP)

CHARLIE: Hi, Mindy and Guy Raz. I'm Charlie (ph), and I live in Rowayton, Conn. And my wow is that colossal squid can grows as big as a schoolbus. Say hi to Grandma G-Force and Reggie for me.

UNIDENTIFIED ACTOR #5: (As Grandma G-Force) Aww, isn't that nice.

(SOUNDBITE OF BIRD COOING)

CHARLIE: Bye.

(SOUNDBITE OF BEEP)

WILLOW AND CALA: Hi, Wowzers.

WILLOW: My name is Willow (ph).

CALA: And my name is Cala (ph).

WILLOW: We're from Pennsylvania. And our wow in the world is that when groundhogs are hibernating, their heart slows down to five beats a minute.

CALA: And say hi to Dennis...

UNIDENTIFIED ACTOR #3: (As Dennis) Hi.

CALA: ...Chandler...

UNIDENTIFIED ACTOR #7: (As Chandler) Ah, Chandler.

CALA: ...And this for you, Grandma G-Force. (Singing) Who let the frogs out? Who, who, who, who, who?

UNIDENTIFIED ACTOR #5: (As Grandma G-Force) Ohh.

WILLOW AND CALA: Bye.

(SOUNDBITE OF BEEP)

UNIDENTIFIED PERSON #4: End of messages.

THOMAS: Hey, everyone. Thank you so much for hanging out with us this week on WOW IN THE WORLD.

RAZ: And to keep the wow rolling, check out this week's scientific conversation starters at our website wowintheworld.com.

THOMAS: And, grown-ups, there you can find more info on how your kids can become members of the World Organization of Wowzers, shop our Wow Shop, upload photos and videos to us and check dates for our upcoming live events. That's wowintheworld.com.

RAZ: Our show is produced by Jed Anderson.

THOMAS: Who provides the bells, whistles and silly characters. Say hello, Jed.

JED ANDERSON, BYLINE: Yello.

THOMAS: Our show is written by me, Guy Raz and Thomas van Kalken, who also provides silly characters. Tom?

THOMAS VAN KALKEN, BYLINE: Hello there.

RAZ: Thanks also to Jessica Boddy, Anna Zagorski, Rebecca Caban, Kit Ballenger and Alex Curley. Meredith Halpern-Ranzer powers the wow at Tinkercast.

THOMAS: Our theme song was composed and performed by The Pop Ups. For more info on their three-time-Grammy-nominated, all-ages music, find them at thepopups.com.

RAZ: And, grown-ups, You can follow WOW IN THE WORLD on Facebook, Instagram and Twitter at @wowintheworld. And our email address is hello@wowintheworld.com.

THOMAS: And if you're a kid with a big wow to share with us, call us at 1-888-7-WOW-WOW for a chance to be featured at the end of the show.

RAZ: Also, if you haven't already done so, please subscribe to WOW IN THE WORLD on Apple Podcasts or wherever you get your podcasts.

THOMAS: Yeah. Leave us a few stars, a review. Or just tell a friend about the show.

RAZ: Thanks again for listening. And until next time...

RAZ AND THOMAS: Keep on wowing.

THOMAS: Jinx.

(SOUNDBITE OF SONG, "THE GOLDEN AGE (WOW IN THE WORLD PODCAST THEME SONG)")

THE POP UPS: (Singing) Wow in the world. Wow in the world. Wow in the world. Wow in the world. Wow in the world.

UNIDENTIFIED CHILD #2: WOW IN THE WORLD was made by Tinkercast and sent to you by NPR.

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