The cruel fate of the Princes in the Tower is one of the most fascinating—and most troubling—of all England's historical murder mysteries. But what was the

The "Liber secretorum alchimie" is an attempt to introduce alchemy into Aristotle's science: manipulating metals, astronomy, astrology, geography and even theol

Alchemy, the Noble Art, conjures up scenes of mysterious, dimly lit laboratories populated with bearded old men stirring cauldrons. Though the history of alchem

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