Do you know which is the deepest point in the Pacific Ocean? Or what is the holy book of Parsis called? How long is the Great Wall of China? What is an aardvark? According to legend, for how many nights did Scheherazade tell her stories of the "Arabian Nights"? Who said: "Laugh and the world laughs with you. Weep and you weep alone."

You'll find answers to these and lots more in our Knowledge Book section.

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