The Sahara Desert Used to be....Green?!

Name: The Sahara Desert Used to be....Green?!
Uploaded: 2026-09-12
Duration: 7 min 26 s
Channel: Khan Academy
Description: Help students think about the impacts of climate change by examining a surprising development—the Sahara Desert was once, well, not a desert! Guiding Questions: 01:10 What are the different features of the Sahara Desert today? 02:05 What do ancient petroglyphs and fossils tell us about the climate a

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History & humanitiesOER Project: Climate7:26

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Help students think about the impacts of climate change by examining a surprising development—the Sahara Desert was once, well, not a desert! Guiding Questions: 01:10 What are the different features of the Sahara Desert today? 02:05 What do ancient petroglyphs and fossils tell us about the climate and landscape of the Sahara region before it became a desert? 03:26 How long of a period was the Sahara region greener and wetter than today? 05:17 How might an increase in pastoralism have caused the climate of the Sahara region to become drier? 06:36 Where did many early humans migrate around 7,000 to 5,000 years ago after the Sahara became a desert?