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File: 11k-jericho-610.jpg

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Most of what we consider modern civilization fits within the last 11,000 years—a period of remarkable climatic stability in which people have been able to continuously inhabit in the same regions for millennia. The United Nations Educational, Scientific, and Cultural Organization describes Tell es-Sultan (ancient Jericho) as "the oldest town on earth." Photo courtesy Seetheholyland.net (some rights reserved).