What is Human Migration?

Summary

Who Smarted? – What is Human Migration?

Episode Date: June 15, 2026
Host: Atomic Entertainment / Starglow Media

---

Episode Overview

This episode of "Who Smarted?" dives into the fascinating concept of human migration. Using trademark humor and imaginative storytelling, the hosts explain what migration is, why it happens, and how it has shaped human history – from early humans searching for food and space to today's migrations caused by climate change, industry, and even the search for adventure. Featuring time-traveling antics with characters Louise, Clark, and Trusty, complex concepts are made fun, accessible, and engaging for kids and families.

---

Key Discussion Points & Insights

What is Migration?

• Definition: “It means to move or relocate from one habitat or region to another.” (A, 04:39)
• Who Migrates?: Everyone’s family has likely migrated at some point—they can move neighborhoods, cities, states, and even countries.
• Notable Quote:

  “If your family ever moved into a new home, you migrated.” (A, 06:47)

---

When Did Human Migration Begin?

• Earliest Migration: Migration didn’t start with the Age of Exploration or the Roman Empire—it began as soon as humans existed. (A, 06:13)
• Origins: The earliest fossils of modern humans (Homo sapiens) are about 200,000 years old, discovered in Ethiopia, Africa. (A, 07:11)
• Notable Quote:

  “The answer, of course, is C. People live in every part of the world because of migration.” (A, 06:28)

---

Why Did Early Humans Migrate?

• Main Reasons:
  • Food scarcity
  • Lack of living space
  • Avoiding disease
• Example: Hilarious caveperson interaction underscores basic needs as a motivator:

  “Too many people, not enough food... Me move to new place. Perhaps with view far away from Oog?” (D, 09:00-09:12)

• Diseases could also spread in large crowds, making life difficult. (A, 09:20)

---

How Did Early Humans Migrate Across Continents?

• No Supercontinent: Contrary to misconception, continents were already separated by the time humans migrated out of Africa. (A, 10:27)
• Ice Age Land Bridges: Low sea levels during ice ages exposed land bridges, making it possible to travel to Australia (~50,000 years ago) and the Americas (~30,000–15,000 years ago). (A, 11:13)

---

Environmental and Social Factors

• Climate Change: Shifts in climate cause droughts, floods, and alter available resources—prompting people to leave affected areas. (A, 12:28)
• Modern Relevance:

  “And this is a major concern today with climate change, as some areas that were once good for farming and living are… might soon become too dry.” (A, 12:28)

---

The Largest Migrations in History

Colonization and Empires

• Expansion of empires (like the Romans, Greeks, Chinese, Spanish, and British) led to citizens moving to new lands—a process called colonization. (A, 17:41)

The Great Atlantic Migration

• Biggest Movement: The largest migration in history occurred between 1820 and 1980—37 million Europeans moved to the United States. (A, 18:52)
• Motives:
  • famine (like the Irish Potato Famine),
  • job opportunities from the Industrial Revolution,
  • and improved living conditions.
• City Growth: Migration into cities for factory work contributed to urban expansion.
• Notable Quotes:

  “Between 1820 and 1980 some 37 million Europeans found a new home in the United States.” (A, 18:52)
  “That’s how cities grew to be as large as they are today.” (A, 19:49)

---

Modern Migration

• Current Numbers: About 281 million people live in countries other than where they were born—over 3% of the world’s population. (A, 19:52)
• Types of Migrants:
  • Voluntary – seeking better opportunities or adventure
  • Forced – escaping conflict, disasters, or persecution

---

Forced Migration: The Dark Side

• Examples:

  • Slave Trade: 20 million people forcibly moved from Africa to the Americas (1500s–1800s).
  • Wars and Partition: World War II (8 million displaced in Germany, 10 million in Soviet Union) and partition of India/Pakistan (14 million displaced).
  • Modern Conflicts: Ongoing crises in the Middle East also create millions of refugees. (A, 20:33)

• Notable Quote:

  “From the 1500s to the 1800s, as many as 20 million people were forced to leave Africa and move to the Americas, where they were sold as property and treated beyond inhumanely.” (A, 20:33)

---

Migration for Adventure and the Future

• Spirit of Exploration:

  “Humans have always wondered what lies beyond what we can see.” (A, 21:44)

• Space Migration: With technology, migration beyond Earth could one day be a reality—“it’s only a matter of time before humans start migrating to space.” (A, 21:58)

• Fun Finale: Imagining life on "Moon Base Alpha," tying together the idea that migration is central to the human story and imagination. (C, 22:12)

---

Memorable Moments & Notable Quotes

• “[Migration] means to move or relocate from one habitat or region to another.” (A, 04:39)
• “If your family ever moved into a new home, you migrated.” (A, 06:47)
• “Me hunt, me fish. Me pick fruit and bury. But no more, thanks to my big family.” (D, 08:34)
• “When too many people occupy an area, food becomes scarce and life becomes difficult. Especially since diseases can also spread in a large crowd. So that’s why early humans started migrating.” (A, 09:20)
• “While early dinosaurs roamed one supercontinent, by the time humans came around, continents had already separated and drifted to pretty much where they are now.” (A, 10:27)
• “Climate change… is a major concern today, as some areas… might soon become too dry. And when people can’t live in a certain place, they move.” (A, 12:28)
• “The so called great Atlantic migration between Europe and North America started in the 1800s and was the largest migration in history.” (A, 18:52)
• “But sadly, not everyone chooses to be a migrant.” (A, 20:28)
• “There are also positive reasons for human migration… the spirit of adventure, curiosity, or discovering new things.” (A, 21:42)
• “It’s only a matter of time before humans start migrating to space.” (A, 21:58)

---

Timestamps for Key Segments

• 04:39–05:23 – Defining migration & early human movement
• 07:11–08:00 – Human origins and first foods-driven migrations
• 10:27–11:13 – Explanation of land bridges and continental migration
• 12:28–13:03 – Impact of climate and environment
• 17:34–19:17 – Colonization, Great Atlantic Migration, Industrial Age motivations
• 19:52–21:27 – Modern migration numbers & forced migration (slave trade, war, refugees)
• 21:42–22:12 – Positive motivations; looking ahead to migration to space

---

Tone & Style

• Fun, fast-paced, zany and playful, with educational storytelling.
• Interactive – poses questions directly to young listeners (“Smarty Pants”) and includes silly sound effects, character voices, and jokes.

---

Conclusion

This episode of "Who Smarted?" brilliantly unpacks the serious and complex history of human migration with jokes, stories, trivia, and time-traveling adventures. Listeners of all ages come away with an understanding of how and why people move, the impact of migration on history, and the ways in which it continues to shape our world—and even the future of humanity.

---

[Speakers are identified as in the transcript: A (Narrator/Host/Trusty), B (Louise), C (Clark), D (Supporting Characters/Caveperson/etc).]

Transcript

[A]

Hey, Smartypants. Have you heard our encyclopedia episode? Maybe you're listening to it right now. I'm kind of obsessed with encyclopedias. Those huge sets of books that contain a little bit of knowledge about, well, pretty much everything. When I was just a little narrator about your age, my parents kept an encyclopedia in our house. So if I wanted to learn about volcanoes or dinosaurs or outer space, I opened my encyclopedia and read all about it. I could easily spend an hour reading and learning. But something was missing. To be totally honest, encyclopedias back then were actually a little boring. Lots of words, not too many pictures, and no games. Which got me thinking. What if I could create an encyclopedia that had all the learning of my old encyclopedia and all the fun games and laughs of who Smarted? So I did. I created the Encyclopedia of Smarting just for you, smarty pants. They're the kind of books I wish someone had made for me when I was just a young narrator. For the first three volumes, I went with dinosaurs, food, and explosions. Three topics I know who Smarted fans will love. Packed with amazing illustrations, insane facts, games, trivia, and of course, jokes. These are like having super sized who Smarted episodes available anytime to enjoy with friends or family. Carry them in your backpack, bring them to your friend's house, show them to your teacher, or just enjoy them at night before bedtime. No matter how you use them, I know you'll love them. Of course, creating encyclopedia costs money. It takes researchers, writers, game designers, and illustrators to bring it to life. Which is why I launched this ambitious project as a Kickstarter. That means it's crowdfunded, which is another way of saying if there isn't enough interest in the Encyclopedia of Smarting, then I won't actually go ahead with making it. As of right now, I'm about halfway to my goal, which means I'm counting on you to help us get to the finish line. Please don't let this project go away. I just know you'll love the Encyclopedia of Smarting so much, and I want nothing more than to bring it to life for you and all the other smartypants out there. So if you're excited and ready to help me bring my dream of the modern encyclopedia to life for for you, have your adult help you. Go to WhoSmarted.com and click Books. There are lots of options to choose from, including a bunch of early bird discount sets and signed collector's editions. Because this is crowdfunded, adults, you'll only get charged when we reach our funding goal, so there's no Risk to you and Smartypants. If you want to understand more about what encyclopedias are and why they're so wonderful check out our Encyclopedias episode of who Smarted, if you haven't already. Above all else, thanks, as always, for being part of our Smarty family being on this journey with us and for supporting who Smarted. And now it's time for who Smarted.

[B]

Hey, trustee, wake up.

[C]

I don't know, Louise. From the sound of that snoring, I'd say he's in a deep sleep.

[B]

Nothing a kettle of water can't fix.

[C]

Clark.

[A]

What? I'm awake. I'm awake. Oh, hey, Louise. Hey, Clark. When? Hey, smarty pants. What's up?

[B]

Not you. Until now.

[A]

Oh, sorry. I was up late. There was an owl that kept hooting all night.

[B]

Mom must have slept through it. Anyway, we're fixing to get going soon. The sun's rising over them hills on yonder. It's time to break camp.

[A]

Oh, without breakfast?

[C]

There's some stew on the campfire.

[A]

Breakfast stew. Campfire. Hooting owls. Wait a second. I live in the city. Look out the window. Okay, that's enough.

[B]

Forget about that. We gotta get going.

[D]

Going?

[A]

Going where?

[C]

Out yonder. To a new home and a new life. To a place where we can be free of oppressive traffic.

[A]

Right, right, right. That's enough.

[B]

It's the human tradition. We're gonna migrate.

[A]

Migrate? Migrate? Smarty pants, do you know what the word migrate means? Why? It means to move or relocate from one habitat or region to another. Like from the city to the wilderness or vice versa. So where to?

[C]

More like migrate. When to? You see, Louise and I, we realize this beautiful world's been mostly settled except for Antarctica and I'm allergic to penguins. But we's been thinking maybe we'd like to settle in a different time. A time when there ain't so many folks and there's no migration.

[A]

Wait. A time of no migration? Smartypants, when do you think people started moving from one place to another? And how did humans end up all over the world? And who, where will humans migrate to next? Get ready to get a move on with another whiff of history and science on who smarted?

[D]

Who's smarted? Who's smart? Is it you? Is it me? Is it science or history? Listen up, everyone. We make smarting lots of fun. Who's smart?

[A]

And. Hey, smarty pants. I'm on the move with my friends, Luis and Clark. They're looking to migrate to a new location like many others, before and after them. But just how Long do you suppose people have been on the move? A, since the age of exploration, which started in the 1400s, B, since the start of the ancient Roman Empire, or C, ever since humans first existed? The answer, of course, is C. People live in every part of the world because of migration. Smartypants. There's a good chance your own family migrated at one point. And like we said earlier, migration is a move from one place to another. So if your family ever moved into a new home, you migrated. People can migrate into neighborhoods, communities, states or provinces, countries, and even continents. Whoa.

[B]

But how many have migrated into a different time, like me and Clark?

[A]

Uh, I don't think anyone's ever done that.

[C]

Until now. Come on, Trusty, let's go to the start.

[A]

Well, this is who smarted. So we can do anything. Okay, but first, smartypants, where do you suppose human migration began? To answer that, you must know where scientists believe humans began. So is that in Asia, Africa, Europe, or in the Americas? If you said Africa, you're right. The earliest known fossils of modern humans, known as Homeo sapiens, are believed to be around 200,000 years old and were discovered in Ethiopia.

[C]

I say we make this time our home.

[B]

I like it. What I want to know is why anyone would want to leave this place. Look at those mountains. And that waterfall.

[A]

Smartypants, think. What are two reasons people may have moved from one location to another? Let's see if you can figure it out from these not very subtle clues.

[D]

Unga bonga. Me hungry. Me need food.

[B]

Oh, hello. Well, we have some delicious leftover breakfast stew.

[D]

Ooh, breakfast stew. Me no know what that means, but willing to try. Ooh, not bad at all. Me want more.

[C]

Uh, no. Sorry. That's the last of it.

[B]

So, my new cave person pal, what do you do for food around here?

[D]

Me hunt, me fish. Me pick fruit and bury. But no more, thanks to my big family. Grog eat all fish. Zorg pick all berry. Oog eat all hogs. Bad oog. Too many people, not enough food.

[B]

Say, Clark, I'm starting to think there won't be enough grub here for us.

[C]

Good point, Louise. So, caveman, what are you gonna do?

[D]

Why me move to new place? Perhaps with view far away from Oog?

[A]

Okay, smarty pants. So tell me, what's a major factor that drives people to migrate? Why, of course, food. And another factor is space. No, not outer space. I mean living space. When too many people occupy an area, food becomes scary and life becomes difficult. Especially since diseases can also spread in a large crowd. So that's why early humans started migrating. The question is, where do you think they went? Europe?

[B]

Asia?

[C]

How about Australia?

[D]

Me go to that rock way over there.

[A]

Oh, that's right. The earliest migrants didn't go very far at all. Just a few miles or kilometers away. But their children moved a little bit farther, and their children's children moved a little farther than that. And after tens of thousands of years, these little movements eventually led humans out of Africa and into modern day Europe, Asia, and a little later, Australia.

[B]

Nice.

[A]

High five, smarty pants. True or false? Early migrants had no problem walking to Australia because all of the continents were pushed together back then. The answer is false. While the early dinosaurs roamed one supercontinent, by the time humans came around, the continents had already separated and drifted to pretty much where they are now.

[B]

That doesn't make any sense. How did these early people cross oceans? With fancy boats or something?

[A]

Nope, smarty pants, do you know? Here's a hint.

[B]

Brr. It suddenly got cold around here.

[C]

Oh, yeah. I wish I had a f. F fire going.

[A]

Smarty pants. Why is it colder here? Is it A, early humans developed air conditioning, B migrations usually happen in winter, or C an ice age was forming? The answer is C. Tens of thousands of years ago, as the world's temperature fell, Polar glaciers collected water. As they expanded, global sea levels dropped, Creating land bridges between places that are now separated by water. Scientists believe land bridges and low sea levels that were easy to cross held helped early humans travel to Australia about 50,000 years ago. And a land bridge between modern day Russia and Alaska helped people migrate from Asia to the Americas about 30,000 to 15,000 years ago.

[B]

Got it. So about 15,000 years ago, there were people living on every continent except one.

[A]

Smarty pants, do you know which continent that was and is? If you said Antarctica, great job. With that in mind, smarty pants. Can you guess another reason why people might migrate?

[C]

The weather.

[A]

That's right, Clark. Falling and rising temperatures can cause floods, droughts, and other conditions that affect food supply and way of life. And this is a major concern today with climate change, as some areas that were once good for farming and living are might soon become too dry. And when people can't live in a certain place because of the climate, they move.

[B]

Any chance we can migrate out of here?

[C]

You got that right, Louise. Maybe we don't want to live with the first migrants.

[A]

Good idea. Let's head to the largest migration in history. Smarty pants. Any idea when that happened? Well, the answer is coming right up after this quick break and A word from our sponsors hey smarty pants, Quick question. Would it be cool to slice flying fruit out of the air like a ninja? I'm hearing a lot of yeses. Well last weekend I was actually doing it in my living room. Just me chopping watermelons and pineapples out of mid air while my dinner was bubbling on the stove. How NexPlayground Nex Playground is a kid focused game system where your body is the controller. No joystick, no buttons. The playground sees your moves and you're in the game. I've been crushing Fruit Ninja and there's also Bluey and Ninja Turtles games and an Avatar Earth Rumble tournament where I got to bend rocks. Dance games, sports games. Over 50 games once you add playpad smarty parents, here's the part for you. Playground is built kid safe. No ads, no in app purchases, no mature content, no online chat with strangers. Just your smarty pants moving their body, having a blast, playing games that you can actually feel good about. It's the screen time solution that's also exercise, which means everyone wins. Check out next playground@nexus playground.com that's nexplayground.com Trust me, your living room is about to get a lot more interesting. Hey smarty family picture. 7th grade trustee at the kitchen table staring at a page of math homework that might as well have been written in Dragonese. I just didn't get it. My parents could afford a few sessions with a tutor and they went at my pace, but they could only help when they were there. Boy do I wish IXL learning had existed back then. IXL is like a friendly tutor working at your pace and adjusting to your needs. IXL has pretty much every subject your kid studies with friendly explanations when they get stuck and fun celebrations when they get it right. Homeschool parents, this is especially for you. I know summer schedules are all over the place and 10 minutes here, here and there with IXL lets you keep the homeschool learning momentum going in a fun way all summer long. Over 15 million students use it and it's backed by real research. Who's Smarted? Listeners get an exclusive 20% off when you sign up [e-mail] smarted so sign up today and give your smarty pants the experience I wish I'd had access to. That's ixl.com smarted for your exclusive 20%

[C]

off

[A]

hey smarty families, is this your family in the morning? Backpacks by the door? Everybody knows where they're going. Calm and organized? No, it wasn't mine either, but Then I kept hearing about this Skylight digital calendar all over social media, people saying it changed their family's lives. So I tried it for a month and this thing is a gift. Game changer. Skylight is a sleek digital display that mounts on the wall or sits on the counter. And it lets us track tasks, recipes and plans in one place. That doesn't seem like that big a deal until you realize it absolutely is. It even syncs with your existing calendars like Google, Apple, Outlook and more. And if in four months you are not 100% thrilled with your purchase skill, Skylight lets you return it for a full refund, no questions asked. Yes, four months. So you literally have nothing to lose. Families are better when they're working together. Right now, Skylight is offering our listeners $30 off their 15 inch calendars by going to myskylight.com smarted go to myskylight.com smartED for $30 off your 15 inch calendar. That is my Sky L L I g h t.com smarted now back to who Smarted. Okay, smarty pants. We're talking about the largest human migration in history. When do you think that took place? Was it A, in ancient times during the Roman Empire, b, from the 1400s to the 1600s during the Age of Exploration? Or c in the 1800s during the Industrial age?

[C]

You know, I think about the Roman Empire all the time. I bet it's that.

[A]

Well, the Roman Empire did play a role in human migration. Because when empires expand, they send their own citizens to live in far away places. This type of migration is called colonization. Various powers have colonized over the course of history, including the Romans, Greeks, Chinese, Spanish, Turks and the British. But colonization did not cause the largest migration. That leaves the age of exploration or the Industrial age. Here's a hint.

[D]

Ha.

[B]

We're on a boat. It must be the age of exploration.

[C]

Morning lads and lass. Where's the crack? Uh, where's the what? Oh, hadn't seen yas before. Was wondering where you're heading once we arrive in the States.

[B]

Well, we don't know yet. Wait a second, Trustee. This isn't the age of exploration, is it?

[D]

Nope.

[A]

What gave it away?

[B]

This here fella said the States in the United States wasn't around in the 1600s. We must be in the 1800s.

[A]

That's right, smarty pants. Were you able to figure that out too? The answer is C. The so called great Atlantic migration between Europe and North America started in the 1800s and was the largest migration in history. Between 1820 and 1980 some 37 million Europeans found a new home in the United States.

[C]

Say, why are you migrating? Well, right now, there's a terrible famine in my home of Ireland. Other parts of Europe too. In the United States, there's plenty of

[A]

food and jobs and smarty pants, that's another reason why people migrate for money. Since the Industrial Revolution, places that offered jobs became more attractive than farmland. Since people now bought their food, new technology led to new factories, and that attracted thousands of workers. That's how cities grew to be as large as they are today.

[C]

I always wanted to live in the big city.

[A]

Okay, smarty pants, now you know that human migration is as old as the human race itself and is still going strong. Can you guess how many people today are settled in a country that's not the one they were born In? Is it 281 million people? 62 million people? Or 593,000 people? The answer is about 281 million people. They're what's known as international migrants, and they make up over 3% of the world's population. But sadly, not everyone chooses to be migrant.

[B]

What are you getting at, trusty? Some folks are forced to leave their homes.

[C]

Yes.

[A]

While some people. People leave home to escape harsh rules or rulers. Sometimes the rulers force people to leave. Smarty pants. Can you think of some instances when that happened? Well, one particularly awful moment in human history is the slave trade. From the 1500s to the 1800s, as many as 20 million people were forced to leave Africa and move to the Americas, where they were sold as property and treated beyond inhumanely. War has also forced many people to migrate. During World War II, up to 8 million people were forced out of Germany. And in the Soviet Union, 10 million people were told to leave their homes. When India became independent and split with what is now Pakistan, violence there caused more than 14 million people to migrate. And today, multiple conflicts in the Middle east have forced millions more to leave home.

[D]

Wow.

[C]

Seems like a lot of people migrate because of bad things happening or because they run out of food or space.

[A]

Very true. But there are also positive reasons for human migration.

[B]

Oh yeah?

[A]

Like what, smarty pants? Can you think of any? I heard some of you mention the spirit of adventure, curiosity, or discovering new things. Humans have always wondered what lies beyond what we can see. These days, much of our planet has been explored. But if you look up, you'll see a whole universe of places we have yet to visit. And thanks to our always improving technology, it's only a matter of time before humans start migrating to space.

[C]

Whoa. Moon Base Alpha is great. We found found our new home. Louise.

[B]

Definitely Clark Trusty. You gonna stay here with us?

[A]

You two woke me up pretty early. I think I'm just gonna migrate back to bed. A special shout out to the Stanfield boys in Ledera Ranch, California. I hear it's been said that who's is your favorite podcast because it's really funny and you learn a lot. Well now that is exactly what me and all your friends at whosmarted love to hear. This episode. Human Migration was written by Wild Dave Beaudry and voiced by Jenna Flikestohike Hoban Sheffield out on the Plains Chastain and Jerry Colbert. Technical direction and sound design by Josh Hahn. Our associate producer is Migrating Max Kamasky. The theme song is by Brian Suarez with lyrics written and performed by Adam Tex Davis. Who Smarted was created and produced by Adam Tex Davis and Jerry Colbert. This has been an Atomic Entertainment production.