Spiked and studded dog-collars derive from the days of the Ancient Greeks, who would give their sheep-dogs sharply spiked collars to protect their necks from wolves whilst they watched over a Sheppard's flock at night.

Less than 1% of the women in the world will ever be able to wear a diamond that is the size of a carat or more.

The largest school in the world is City Montessori School in India and has over 25,000 students in grade levels ranging from kindergarten to college.

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