Most peridot formed deep inside the earth and was delivered to the surface ... gems adorning the shrine of the Three Holy Kings in Germany’s Cologne Cathedral were emeralds. They are, in fact, ...
You don’t need to be a Keith Jarrett fan to enjoy "Köln 75," but for anyone who is the movie is an affectionate anecdote that ...
A weekly programme that illuminates the mysteries and challenges the controversies behind the science that's changing our world.
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