Stone tools and ancient animal fossils have revealed that early humans were in Arabia 400,000 years ago. Prehistoric climate change may have encouraged their travels across what are now vast stretches of desert, according to new research.
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This is the oldest dated evidence for humans in Arabia, which includes Saudi Arabia and other countries across the Arabian Peninsula. Saudi Arabia's deserts are some of the driest regions in the world, but it was a different story hundreds of thousands of years ago. Environmental changes occurred after periods of heavy rainfall in the desert, creating lush grasslands that served as the perfect backdrop for early human ancestors migrating to and from Africa.
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