The busiest shopping hour of the holiday season is between 3:00 pm and 4:00 pm on Christmas Eve.

If eaten in one meal, 30 to 90 grams of polar bear liver is enough to kill a human being.

The Grammy Awards were introduced to counter the threat of rock music. In the late 1950s, a group of record executives were alarmed by the explosive success of rock 'n roll, considering it a threat to "quality" music.

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