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Human Migration
How did a small group of people in Africa end up spreading to every corner of the planet?

Over tens of thousands of years, humans spread from Africa to every continent on Earth (except Antarctica). This incredible migration story is about adaptation, knowledge, courage, and resilience. Your learner will trace the routes humans took, imagine the challenges they faced in new climates and landscapes, and understand how tools, clothing, fire, and cooperation made it all possible. It's a profound reminder that all humans share this common heritage of exploration and adaptation.

S2S_Lesson31 by Selene

Key Ideas

  • Human migration was driven by climate change, food availability, and curiosity.
  • Cultural knowledge (fire, tools, clothing) was as important as physical adaptation.
  • Humans used land bridges, boats, and coastlines to travel long distances.
  • Adaptation allowed humans to thrive in deserts, tundra, forests, and islands.

Spine Reading
  • DK's Science as You've Never Seen it Before: N/A
  • Mammoth Science: Climate pg. 146
  • Visual Timelines: Life on Earth pg. 114-115, 119, 122-123
  • Alternatives
✏️  Notebooking Activity
Draw your own migration map detailing how Homo sapiens migrated out of Africa. 

Cosmic CalendarWhere we are: December 31 · 11:55 PM to 11:58 PM
Five minutes to midnight on the Cosmic Calendar. Read the script below before the lesson.

Read aloud: 11:55 PM on December 31st. Five minutes to midnight on our Cosmic Calendar. Beginning around 115,000 years ago, modern humans began spreading out from Africa. By about 35,000 years ago, people had reached most of the habitable world. On our calendar, this migration happened between 11:55 and 11:58 PM. Three cosmic minutes for humans to spread across the entire planet. We tend to think of history as a long, slow story. But on this calendar, the human story is happening in a breathless rush right at the very end. We’re almost out of time.

Timeline EntriesLabel the next page in your timeline “Human Migration: 60,000 Years Ago”. The workbook prompt asks learners to draw a small band of Homo sapiens walking along a coastline at sunset, with a world map faintly sketched behind them showing their route out of Africa.

  • c. 300,000 years ago – Early Homo sapiens appear in Africa
  • c. 200,000–130,000 years ago – Humans begin migrating within Africa
  • c. 70,000–60,000 years ago – Major migration out of Africa into the Middle East
  • c. 50,000 years ago – Humans reach South Asia and Australia (via land bridges and boats)
  • c. 45,000 years ago – Humans spread into Europe
  • c. 30,000–20,000 years ago – Humans adapt to extreme cold in Siberia
  • c. 20,000–15,000 years ago – Humans enter the Americas 
  • c. 12,000 years ago – Humans are living on every continent except Antarctica

Discussion Questions
  1. Why did humans move to new places? 
    Sample answer: Humans moved to find food, water, and safe places to live.
  2. How did humans stay warm in cold places? 
    Sample answer: They wore animal skins and used fire.
  3. How did humans help each other while traveling? 
    Sample answer: They shared food, skills, and knowledge.
  4. What problems did humans face when moving into new environments? 
    Sample answer: Humans faced new climates, animals, plants, and landscapes.
Digging Deeper
  • Why was cultural adaptation important for human survival? 
    Sample answer: Culture allowed humans to adapt quickly using tools, clothing, and shared knowledge.
  • How did climate changes affect human migration? 
    Sample answer: Climate changes created land bridges and changed migration routes.

Vocabulary
  • Migration — The movement of people or animals from one region to another; early humans migrated from Africa to every other continent.
  • Homo sapiens — The scientific name for modern humans; our species appeared in Africa about 300,000 years ago and spread across the globe.
  • Beringia — The land bridge between Asia and North America exposed during the last Ice Age.
  • Cultural Adaptation — The use of knowledge, tools, clothing, and social practices to survive in new environments.
  • Climate — The long-term pattern of weather in a region; changes in climate drove much of early human migration.
  • Wayfinding — The skill of navigating without maps or instruments, using stars, ocean currents, and landmarks.

SCIENTIST SPOTLIGHT: Ripan MalhiRipan Malhi is a Native American geneticist at the University of Illinois who studies ancient DNA to understand how humans migrated and diversified, particularly in the Americas. What sets his work apart is not just its scientific rigor but his deep commitment to doing this research in genuine partnership with Indigenous communities, who have often been harmed or excluded by the scientists who study their ancestors. Malhi co-founded the Summer internship for Indigenous peoples in Genomics (SING) program to train Indigenous scientists to do this work themselves. His research has contributed important data about when and how the first people arrived in the Americas, and his approach has helped set new ethical standards for how scientists engage with Indigenous communities and their ancestral remains.

Videos:
Digging Deeper Activity:
What is ancient DNA and how do scientists extract it from remains that are thousands of years old? Research one finding from ancient DNA research that has changed what we know about human migration into the Americas. Then discuss: why does it matter who is doing the science and how they involve the communities whose history is being studied?

Species to ResearchThis lesson covers human migration out of Africa. Here are some species and megafauna encountered along migration routes that learners can choose to research:
  • Homo sapiens idaltu— An early modern human from Ethiopia, about 160,000 years old; considered one of the oldest known anatomically modern humans.
  • Mammut americanum (American Mastodon)— One of the large mammals that early humans encountered upon crossing Beringia into the Americas.
  • Diprotodon— A giant wombat-like marsupial that roamed Australia; it went extinct shortly after the first humans arrived on the continent.
  • Homo floresiensis— A tiny hominin nicknamed “the hobbit”; it survived on the island of Flores in Indonesia until as recently as 50,000 years ago.

Sources

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