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Guy Raz
Grown Ups Wondery subscribers can listen to wow in the World early and ad free right now. Join Wondery in the Wondery app or Wondery Kids plus on Apple Podcasts.
Mindy Thomas
Hey, Grown Ups. Mindy and Guy Raz here. And before we start the show, Happy National STEM Day. Watch out, Guy Raz. Mindy, we think that every day should be National STEM Day. So we are bringing the wows of STEM home to you.
Guy Raz
That's right. Mindy and I have some brand new wow in the World toys out in the world. Just in time for the holidays.
Mindy Thomas
Made for the kids who love science and for the ones who don't yet.
Guy Raz
From our 100 experiments, that wowkit to the telescope and astronomy kit, our wow in the World toys help your Wowzer learn about their world through play.
Mindy Thomas
Plus, you can hear exclusive audio content from me and Guy Raz to help your Wowzer discover even more Wows.
Guy Raz
Grown Ups help make every day feel like STEM day at your home. With our wow in the World toys designed with your Wowzer in mind, you.
Mindy Thomas
Can shop our wow in the world toys@tinkercast.com toys. That's tinkercast.com toys. Oh, hey, guy Raz, can you hand me some toys?
Guy Raz
Oh, sure. Here you go.
Mindy Thomas
Thank you. I'm gonna throw them in the confetti cannon and see what happens.
Guy Raz
Oh, no.
Dennis
Ahem. Ahem. Wee wow on the weekend. Wee wow on the weekend. Wee wow on the week. Cause this is what we do on the weekend. Talking, laughing. Me and Reggie singing, laughing.
Guy Raz
And then we.
Dennis
Oh, wait, no, I said laughing twice. Whatever. We wow on the weekend. Yeah, we wow on the weekend.
Mindy Thomas
Laugh, clap.
Dennis
We wow on the weekend. Cause this is what we do on the weekend. Hello and welcome to We Wow on the Weekend. Hi, I'm your host, Dennis, and this is my co host, Reggie. Reggie. Say hi, Reggie. Hey. Attention, Reggie. The show is starting. You're distracted. Well, what are you looking at over there? Trading cards. Oh, what kind? Nokimon. I've never heard of nokimon. Let me see. Aw, they're little pasta monsters. Wow, look at all. Macaroosar, riga, turtle, pappardino, raviolion. Can I have that one? Trade for it. But I don't have any cards. Well, how about I just make you some actual pasta? What stats does it have? Reggie, it's pasta. There's no stats. Can we just do the show? Okay, let's get into our first segment. Reading reviewsies. I'm reading reviewsies for me and for you. Z's. We've got us some Doozies. So let's read reviews. Z's.
Guy Raz
Okay.
Dennis
Welcome to Rating Reviewsies, the segment where I print out a bunch of comments people write on Apple podcasts or Spotify or whatever, and I read them aloud. Okay, let's get started. This first reviewsie comes to us from username uruledanis. The title reads, wow. Wow. I give Dannis star emoji. Wait, who's Dannis? Yeah, I don't know who Dannis is. Doesn't matter. The message says star emoji, flame emoji, dog emoji, flower bouquet emoji. And then it says, more poupee episode. More Poupee. What's Poupee? Isn't Poupee like a fancy mustard or something? Oh, you think it's a typo and it's supposed to be puppy? Okay, well, Dannis, I'm not sure what we have. What, you think Danis is a typo too? Reggie, you don't know that. Dannis could be how they spell their name. Sorry, Dannis, if that's your name. No new Poupe episodes. I mean, hopefully more puppy episodes coming soon. Next reviewsy. This next reviewsy comes to us from username Skull and crossbones emoji Explosion emoji. The title reads, love it. And please read my reviewsie. Wow, perfect. I am reading the reviewsie just like the title asked and the message says, love wee. Wow. On the weekend. It is my top pick of new episodes. And Dennis, you are my favorite Star eyes emoji.
Mindy Thomas
Ah.
Dennis
You are so awesome. Six stars, Reggie. We're the top pick. I don't know. We're just the top pick. Isn't that great? Wow. Top pick. Next reviewsy. This next reviewsy comes to us from username bigboy1225. The title reads, I want train week. And the message says, fun fact, some trains levitate with magnets. Wow. Really? Well, now I want train week. Reggie, can Me and Big Boy1225 have Train Week with magnets and trains and levitation?
Mindy Thomas
No.
Dennis
Hmph. Me and Big Boi1225 never get what we want. Never. Next reviewsy. This last reviewsy comes to us from username Ibrahim. The title reads, it's a good show and the message says, good.
Guy Raz
Job.
Dennis
Well, Ibrahim, thank you and thanks for all your revenge viewsies, listeners. Keep em coming. If you leave a review on Apple podcasts or Spotify, I just might read it on wewow on the weekend. And you can leave whatever number of stars you want as Long as it's five or more. Okay. Up next is a little segment I like to call Inside Tinkercast Studios. Ahem. Inside Tinkercast Studios. This is the part where we revisit an episode of one of my favorite Tinkercast shows. And today we're listening to wow in the World, Season 1, Episode 10. It's called Comets, Ice Age, and Human Civilization. The Ice Age? Is that the time period where it was really cold or the one where everyone had flying skateboards? Right, right, right, right, the cold one. Yeah. I think the skateboard age was a dream I had. And in my dream, we all had to ride to the store to buy alligator food because. Ah, right, the episode I almost forgot. Okay, and play wow in the World. We'll be right back.
Mindy Thomas
Grown ups, this message is for you.
Dennis
That's it.
Mindy Thomas
Back to the show.
Dennis
Wow in the World.
Mindy Thomas
Hey, Guy Raz.
Guy Raz
Oh, hey, Mindy.
Mindy Thomas
Why are you putting on a ski suit in the middle of the summer?
Guy Raz
Oh, this thing?
Mindy Thomas
Yeah.
Guy Raz
Well, I was just gonna hop into the time machine that your dad's building and see if I could pay a quick visit to the. To the late Pleistocene epic.
Mindy Thomas
Okay, well, first of all, my dad and I are still putting the final touches on the time machine, so it's not really ready for takeoff. And second thing, can you refresh me on what exactly the Pleistocene Epoch was?
Guy Raz
Oh, sure, Mindy. It was a period of time here on Earth when things were very, very, very cold.
Mindy Thomas
Are you talking about the Ice Age?
Guy Raz
Yes, the Pleistocene is known informally as the Ice Age, but it was actually a period of time that lasted about two and a half million years. And during that time, big parts of the Earth got colder.
Mindy Thomas
Wait, were humans alive during this time?
Guy Raz
Well, our species, Homo sapiens, were born here on Earth about 220,000 years ago. So, yes, we humans were around towards the very end of the Pleistocene Epoch.
Mindy Thomas
Okay, so, Guy Raz, the Pleistocene Epoch sounds really, really cold. Not exactly my idea of paradise. Are you sure you want to go back there? I mean.
Guy Raz
Well, Mindy, I'm curious to see what North America looked like back then.
Mindy Thomas
Man, curiosity leads us to some strange places. Okay, Guy Raz, if you insist on going, you might want to take this with you.
Guy Raz
Oh, what's this, Mindy?
Mindy Thomas
Oh, it's just a giant woolly mammoth trap. Got it on clearance, like, three years ago, but haven't had a reason to open until now. Okay, you're gonna want to take this with you.
Guy Raz
Thanks, but I don't think I'll be needing that mini hey, by the way, are you interested in coming along?
Mindy Thomas
Well, I guess I don't have anything else going on, but only if it's for a quick visit. I don't have 200 million years to spare.
Guy Raz
Okay, great. Come on, into the machine.
Mindy Thomas
My dad did tell me to stay out of this thing, but I'm pretty sure he said that on Opposite Date.
Guy Raz
Whoa.
Mindy Thomas
Look at all these buttons.
Guy Raz
Yeah. Do you know which one we should push?
Mindy Thomas
Welp, my heart says all of them, but my brain says. How about this one? The one that says Boston, Massachusetts, late Pleistocene. Here goes nothing.
Guy Raz
Well, I'm not sure you hit the.
Dennis
Right one, Mindy, but it feels like.
Guy Raz
This time machine is. Whoa. Mindy. Mindy.
Mindy Thomas
I'm right over here, guy.
Dennis
Raz, you okay?
Mindy Thomas
Yeah, just feeling a little. Just a little.
Guy Raz
I'm sorry about that. This time travel thing tends to make some people a little car sick.
Mindy Thomas
Yeah, you can say that again.
Guy Raz
This time travel thing tends to make people a little car sick.
Mindy Thomas
Oh, yeah, I didn't mean that literally.
Guy Raz
Oh, yeah. Sorry. Anyway, Mindy, if your dad's time machine works, when we step out of this thing, we should be roughly in the same spot where Boston, Massachusetts is in the present day.
Mindy Thomas
Whoa. Kyraz, what if this thing really did work? Oh, man, I am so nervous. There's only one way to find out. We gotta get out of here. You ready?
Guy Raz
I'm ready. Let's open this thing up.
Mindy Thomas
Wow.
Guy Raz
I think we're here, Mindy.
Dennis
Whoa.
Mindy Thomas
It's freezing here, Guy. Garaz, you said we were going to Boston. I don't see a single Dunkin Donuts anywhere around here.
Dennis
What is going on?
Guy Raz
Well, remember, Mindy, I said we were going to roughly the same place where you can find Boston, Massachusetts, in the modern world. But we traveled back in time 20,000 years ago, so naturally, no Boston, no Red side, no Dunkin Donuts.
Mindy Thomas
Yeah, and all I see is ice.
Guy Raz
Isn't it incredible? No.
Mindy Thomas
It's freezing.
Guy Raz
I know. A magical winter wonderland.
Mindy Thomas
Oh, yeah. I'm ready to go back to the modern day.
Guy Raz
Well, before we do that, Mindy, I just want you to take a look around, because this is what parts of North America looked like 20,000 years ago.
Mindy Thomas
Wow. I don't even recognize it.
Guy Raz
Big parts of our continent were covered in ice. A giant ice sheet. And that's why we sometimes call this period in history an ice age.
Mindy Thomas
Wow, that is so super fascinating, truly, and I'm glad we made this trip. But I am ready to go back now because I am freezing and I left my Jacket. Back in the lab.
Guy Raz
How are you?
Mindy Thomas
Not even cold.
Guy Raz
Okay, I guess we've seen enough here. Let's. Let's get back in.
Mindy Thomas
This is so much better. It was so cold out there. I still can't believe we got to visit the Ice Age. All right, saddle up. Buckle up your seatbelt. I'm gonna press this button right here. And here we go. Wait, we stopped too soon. It's only 1969. I think I'm gonna be sorry about that.
Guy Raz
Mindy, it's fine.
Mindy Thomas
I just need to shake it off, and then I'll be okay. Much better. So, Guy Raz, of all the times in history, why did you want to go back to the coldest?
Guy Raz
Well, Mindy, during the Pleistocene, as I mentioned, parts of North America were covered in ice. And the places today where you'll find cities like Toront and Detroit, even Chicago, these places were covered in ice.
Mindy Thomas
Well, it looks like they eventually thawed out. So when did it start to get warmer?
Guy Raz
Well, about 18,000 years ago, the Northern Hemisphere, or the parts of the planet above the equator, started to slowly warm up, and that giant sheet of ice started to melt. But, Mindy.
Mindy Thomas
I had a feeling you were going to say that.
Guy Raz
But, Mindy, in the last 1,000 years of the Pleistocene, parts of the Northern Hemisphere all of a sudden started to get colder again.
Mindy Thomas
Wait, what?
Guy Raz
Yeah, Colder.
Mindy Thomas
But why? You just said it was getting warmer.
Guy Raz
Well, there are different theories about why this happened. It was a period of time that lasted about 1,200 years, and geologists or scientists who study the Earth call it the Younger Dryas Period.
Mindy Thomas
Younger Dryas?
Guy Raz
Yeah, it was the last great Ice age here on planet Earth, and no one's entirely sure why it happened.
Mindy Thomas
Well, what's the theory?
Guy Raz
Well, Mindy, the theory is that somehow lots and lots and lots of cold water from lakes here in North America started to flow into the Atlantic Ocean, and that disrupted the ocean.
Mindy Thomas
And by currents, you mean the movement of the ocean?
Guy Raz
Yeah. You can think of currents as these giant rivers of water that flow deep below the surface of the ocean. And here in North America, those currents of water help bring warm water from the equator, the midpoint on Earth, where the climate is generally warmer, and it brings that warmer water to colder parts of the Earth, like. Like in the Northern Hemisphere areas closer to the North Pole.
Mindy Thomas
Yeah, but how would cold water from lakes be enough to disrupt ocean currents? I mean.
Guy Raz
Well, the theory is that because so much cold water started to flow into the Atlantic, it blocked the warmer water from coming up, and the climate or the weather conditions on Earth. Well, they're affected by ocean currents.
Mindy Thomas
Okay, I gotcha. So what you're saying is that all of that cold water that was flowing into the Atlantic oce made it so that no warm water could make its way up to parts of North America.
Guy Raz
Precisely, Mindy. And without that warm water, the climate here in North America plunged or dropped back down.
Mindy Thomas
But why did it happen?
Guy Raz
Well, scientists don't entirely know.
Mindy Thomas
I knew you were gonna say that.
Guy Raz
But there is another theory as to why Earth suddenly got colder, and this theory is not as widely accepted by scientists, but. But it is still interesting. Yeah.
Mindy Thomas
So what's that theory?
Guy Raz
Well, Mindy, that theory is that sometime around the start of the last ice age, a comet struck planet Earth.
Mindy Thomas
Whoa. A comet?
Guy Raz
Yeah, a giant comet that kicked up so much dust and dirt that it blocked sunlight from large parts of the northern hemisphere.
Mindy Thomas
And without sunlight, things would begin to get colder.
Guy Raz
Yes, that's the. The theory.
Mindy Thomas
So did it happen?
Guy Raz
Well, again, we don't know. Many geologists have serious doubts about it. But recently, Mindy, a team of engineers from the University of Edinburgh in Scotland made the case once again that our last ice age may have been related to a comet that landed on Earth.
Mindy Thomas
Well, how did they figure this out?
Guy Raz
Well, this team of scientists, led by engineer Martin Swettman from the University of Edinburgh, analyzed or studied an ancient archaeological site in Turkey that led them to this theory.
Mindy Thomas
Hold the phone, Guy Raz. So a minute ago, we were in North America, and now we're in Turkey.
Guy Raz
Yes, Turkey.
Mindy Thomas
That's the country that connects the continent of Europe to the continent of Asia.
Guy Raz
Yes, and Turkey is where some of the most ancient human civilizations or communities formed. These were the earliest examples of humans banding together to form towns and neighborhoods and place where they lived.
Mindy Thomas
Yeah, but why would some random place in Turkey hold the clue that we need to better understand this possible comet strike?
Guy Raz
Well, Mindy, the place in question is a very important archaeological site called Gobekli Tepe.
Mindy Thomas
Uh, Gobekli to where?
Guy Raz
Gobekli Tepe, Mindy. It was discovered by archaeologists who began to excavate or dig it up in 1994. And what they found was an ancient temple or place where ancient humans worshiped different gods that they believed in.
Mindy Thomas
And what did the archaeologists find there?
Guy Raz
Well, they found the ruins of ancient buildings and beautiful ancient carvings in stone.
Mindy Thomas
Carvings of what?
Guy Raz
Well, in one famous stone called the vulture stone, archaeologists found carvings of animals. And here's the amazing part about Mindy.
Mindy Thomas
I am dangerously on the edge of My seat.
Guy Raz
These engineers from the University of Edinburgh believe that the animals in the carving actually represent a series of constellations.
Mindy Thomas
Constellations. So you mean like a group of stars that form a pattern?
Guy Raz
Yes.
Mindy Thomas
Like Orion the hunter and Leo the lion.
Guy Raz
Yes. And I bet if you go outside tonight, Mindy, and it's a clear night, you might even be able to see the three stars that make up Orion.
Mindy Thomas
You know what they say about Orion's belt, right? Uh, it's a huge waste of space.
Guy Raz
Uh, that's not.
Mindy Thomas
I know. That joke. Only deserves 3 stars, am I right?
Guy Raz
Anyway, Mindy, as I was saying, along with carvings that may represent constellations, the scientists believe these carvings show a comet striking the Earth.
Mindy Thomas
The same comet that might have come caused the Ice Age.
Guy Raz
That's the theory that this ancient civilization somehow knew about this comet strike and carved the story into stone. Because this was during a time a long, long, long time ago, before humans wrote things down on paper. And the way they remembered history was by carving it into stone. Wow.
Mindy Thomas
And so how did we humans survive in such cold temperatures?
Guy Raz
Well, Mindy, remember, this Ice Age mainly affected the northern parts of the planet. And up until that point, most humans were still living closer to the equator. But even the humans who did live in these cold climates, well, they adapted. They grew more hair to cover their bodies, they used animal skins to keep themselves warm, and they lived in caves to protect them from wind and ice.
Mindy Thomas
Yeah, but how did they find food?
Guy Raz
Well, it's interesting you asked, Mindy, because the end of the last Ice Age actually helped us humans to become farmers.
Mindy Thomas
Farmers?
Guy Raz
Yeah, because for most of our history, we Homo sapiens were hunter gatherers.
Mindy Thomas
You mean we'd go out and hunt for food during the day?
Guy Raz
Yeah, and there were no supermarkets or farmers markets or places we could go to just buy our groceries. And, in fact, we humans didn't really start to grow our own food until about. About 10,500 years ago. So right after the end of the last Ice Age.
Mindy Thomas
Yeah, but what does the end of the Ice Age and humans becoming farmers have to do with one another?
Guy Raz
Well, Mindy, as the temperature on Earth became warmer, ancient humans started to figure out that instead of looking for fields of wild wheat or barley, that they could just take the seeds from these plants and plant them and grow food on their own without having to look for it.
Mindy Thomas
Yeah, by watering their seeds and making sure that they had plenty of sunlight.
Guy Raz
Yes, and this is often called the Neolithic Revolution.
Mindy Thomas
Fancy.
Guy Raz
This was a period when humans discovered how to use seeds. So instead of Randomly coming across an apple tree or another fruit tree, they could just take the seeds out, plant them and grow their own stuff right where they live. And this could happen because the ice age was over and the Earth's temperature was becoming warm enough to start growing crops.
Mindy Thomas
And this could happen because the ice age was over and the Earth's temperature finally became warm enough to start growing crops.
Guy Raz
Yes. Huh.
Mindy Thomas
Well, in that case, Guy Raz, I'm just going to plant this tiny Cheerio in the ground.
Guy Raz
Uh, Mindy.
Mindy Thomas
And by this time next year, I will have grown my very first donut tree. Specifically a chocolate glazed donut tree that blooms with lots of sprinkles in the springtime.
Guy Raz
Uh, Mindy?
Mindy Thomas
Yeah?
Guy Raz
Donuts are not a plant. They don't. They don't have seeds.
Mindy Thomas
Donut. Underestimate the power of mother Nature. Guy Raz.
Guy Raz
Nice.
Mindy Thomas
Even though you're correct, I'm still planting it anyway.
Guy Raz
Okay.
Mindy Thomas
Cause you never know. The Earth is full of surprises.
Dennis
Donut tree. And wow. The last ice age ended and then humans started growing things from seeds. Reggie. I grow things from seeds. Yeah, My prize winning azaleas. And I grow other plants, but I don't talk about them much because they haven't won any prizes yet. Well, this year I grew banana peppers. Really? You think there could be a best banana pepper competition? Let's go find out where it is. Oh, right. First we gotta wrap up the show. Thanks to all you listeners out there for tuning in to Wee Wow on the weekend. If you have a question for me, call and leave me a message at 1-888-7-WOW-WOW. That's 1-888-7- wow Wow. I just might answer your question on Wee Wow on the Weekend. Okay, let's go look and find my best banana peppers for the competition. That we don't. Oh, Reggie, do you think there's a prize for the most judgmental looking fern? Because I have this fern named Sarah that.
Mindy Thomas
Thanks for joining us for this edition of We Wow. On the Weekend. Our show is written by Ruth Morrison and Jed Anderson. Original sound design and production is done by Henry Moskal and Marion Lozano with help from Jed Anderson and Tyler. Original music for wewow on the Weekend is composed and performed by Tyler Thole.
Guy Raz
Special thanks to Steph Sosa, Rebecca Caban and all of the other tinkerers at Tinkercast hq.
Mindy Thomas
There's still time to share your Wee Wow crafternoon challenges with us grown ups. You can upload pictures and videos of your projects to us@tinkercast.com share or call.
Guy Raz
Us at 1-888-Our website is tinkercast.com there you can learn more about becoming an official member of the World Organization of wowzers, learn about upcoming events, shop our shop and pick up a copy of the latest edition of our number one New York Times best selling book series, wow in the Wild.
Mindy Thomas
Thanks again for thinking, tinkering, experimenting and exploring with us this week. Meet us back here on Monday for Wow in the World. And remember who wows we wow. Wow in the World was made by Tinkercast and sent to you by Wondery.
Host: Tinkercast | Wondery
Date: November 9, 2025
Episode: WeWow on the Weekend (11/9/25)
This special weekend edition of Wow in the World—hosted by Dennis (with co-host Reggie)—delivers a lively blend of giggles, listener reviews, imaginative segments, and a relisten to a past Wow in the World story. The episode centers on the mysteries of the Ice Age, the science of climate change, human adaptation, and an exploration of a fascinating archaeological discovery in Turkey. The show maintains its trademark mix of silliness, fun science, and interactive kid-focused energy.
Quote:
“You can leave whatever number of stars you want as Long as it's five or more.” – Dennis (06:02)
A relisten to Wow in the World, Season 1, Episode 10: Comets, Ice Age, and Human Civilization hosted by Mindy Thomas and Guy Raz. This segment is packed with fun, facts, and adventure:
Quote:
“No Boston, no Red Sox, no Dunkin Donuts. ...and all I see is ice.” – Mindy (11:39)
Explained Simply:
“All that cold water... made it so that no warm water could make its way up to parts of North America.” – Mindy (15:52)
Quote:
“These engineers from the University of Edinburgh believe that the animals in the carving actually represent a series of constellations.” – Guy Raz (18:51)
Playful Moment:
“And by this time next year, I will have grown my very first donut tree... a chocolate glazed donut tree that blooms with lots of sprinkles in the springtime.” – Mindy (22:20)
This episode of WeWow on the Weekend is a science-rich, joyfully silly exploration of climate change, adaptation, and ancient mysteries—framed with playful host antics, audience shoutouts, and imaginative time travel. Perfect for curious kids and their grown-ups, the episode brings to life the story of Earth’s transformations in a way that’s memorable and fun.
For more, tune in every weekend and join the World Organization of Wowzers for exclusive content and activities!