After exploring the Vatican City for clues to the identity of the Stolen Cat Mummy thief, strange inscriptions found around the city have pointed to a secret Underworld below the Tower of Nicholas V.
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China's Great Green Wall: The giant artificial forest designed to slow the expansion of 2 deserts
Since 1978, China has planted more than 66 billion trees along its 2,800-mile-long northern border, and it wants to plant 34 ...
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