As portals to the supernatural realm that creates and animates the universe, caves have always been held sacred by the p
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The recent resurgence of academic interest in caves has demonstrated the central roles they played as arenas for ritual,
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The ancient Mesoamerican city of Izapa in Chiapas, Mexico, is renowned for its extensive collection of elaborate stone s
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Richard Alan Miller has thoroughly researched the historical use, chemical structure, preparation for consumption, and m
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This book explores the practicality of using the existing subsurface geology on the Moon and Mars for protection against
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A small glimpse into past history of the Earth and its inhabitants who hid highly technical equipment which to this day
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The simple question "How did the Maya come up with a calendar that had only 260 days?" led Vincent Malmström t
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What was life like millions of years ago? The answer lies deep underground, in a place once home to a ferocious predator
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