# When the Sahara Was Green | How the Earth Was Made (S2, E4) | Full Episode

Free with YouTube's ads, posted by HISTORY.

Africa's Sahara Desert is the size of the United States, making it the largest desert in the world. It's also the hottest place on the planet. See more in Season 2, Episode 4, "Sahara." #HowTheEarthWasMade

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HISTORY goes to the ends of the earth to find where our world began. Forged from fire and ice, formed by floods, volcanoes, asteroids and earthquakes, our planet tells a dynamic geological story. What are mega-tsunamis? What happens when you have millions of years of rain? Visual effects, location filming and stunning aerial photography bring viewers back 4.5 billion years to enjoy a unique window on our world. How the Earth Was Made peels back time like layers of rock to reveal the origins of the place we call home. The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok.

- What it is: Full episode
- Series: [Full episodes from HISTORY](https://invisiblenetwork.ai/library/rights-holders/series/4f1a083226ad)
- Previous episode: [Opening an Interdimensional Portal? | The Secret of Skinwalker Ranch (S2, E4) | Full Episode](https://invisiblenetwork.ai/watch/rights-holders/7Ky1Gi9IA6g)
- Next episode: [Transporting 77,000 TONS of Nuclear Waste | Mega Disasters (S3, E7) | Full Episode](https://invisiblenetwork.ai/watch/rights-holders/BdRgpV82m_I)
- Length: 45 min
- Rights holder: [A&E Television Networks, LLC](https://www.history.com/) (its site links the channel: https://www.history.com/)
- Channel: [HISTORY](https://www.youtube.com/channel/UC9MAhZQQd9egwWCxrwSIsJQ)
- Plays: Only in 22 countries, as its rights holder set it on YouTube
- Who can watch here: Adult profiles and older (no rating is recorded on YouTube, so adults only)
- Made for kids: No, as YouTube designates it
- On YouTube: [Watch on YouTube](https://www.youtube.com/watch?v=2aZR3fhgrbs)

It plays in YouTube's embedded player on its page here, loaded only when Play is pressed; YouTube's Terms of Service (https://www.youtube.com/t/terms) and Google's Privacy Policy (https://policies.google.com/privacy) apply to it.