Duracell, the battery-maker, built parts of its new international headquarters using materials from its own waste.

The name for Oz in "The Wizard of Oz" was thought up when the creator, Frank Baum, looked at his filing cabinet and saw A-N, and O-Z, hence "Oz."

If you are right handed, you will tend to chew food on your right side. If you are left handed, you likely to chew food on your left side.

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