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5th millennium BC - Wikipedia
Interactive Map "Ancient Earth" Shows Earth Over Millions of Years
History of Earth - Wikipedia
Upper Paleolithic - Wikipedia
What Did the Continents Look Like Millions of Years Ago?
What's the hottest Earth's ever been? - NOAA Climate.gov
What will the Earth look like in 50,000 years? | HowStuffWorks
The map that fills a 500-million-year gap in Earth's history
Earth’s early evolution: fresh insights from rocks formed 3.5 billion ...
7 - Optimum and Crisis in Early Civilizations, 3000–500 BC