The concept of hell as a place of punishment varies dramatically across world religions — Buddhism's naraka is temporary, not eternal.

Sikhism, founded in the Punjab region in the 15th century, is one of the youngest of the major world religions.

Chocolate was consumed as a bitter beverage by the Aztecs long before it was made into solid bars.

Elvis Presley never wrote any of his own songs.

Social norms influence everyday behavior.

Philip Glass and Steve Reich pioneered minimalism — music based on repetitive patterns with gradual change.

The Maori of New Zealand use a rich oral tradition called 'kōrero' to preserve history and genealogy.

The world's longest musical piece, 'As Slow As Possible,' is being performed in a German church and will last 639 years.

Wayne Gretzky scored so many goals in his NHL career that if you remove all his goals, he would still be the all-time leader in points.