Tennis was originally played with bare hands before rackets were introduced in the 16th century.

Elvis Presley never wrote any of his own songs.

Traditional Japanese kabuki theater originally featured women actors — they were banned in 1629, and men have played female roles ever since.

There's a statue of Jason Voorhees, the “Friday the 13th” serial killer, chained to the bottom of a Minnesota lake.

The word 'OK' is one of the most recognized expressions worldwide — likely originated from a playful 19th century American abbreviation fad.

Many world mythologies feature a world tree connecting different realms — Yggdrasil in Norse myth, Ashvattha in Hinduism.

The Vedas, sacred Hindu scriptures, were composed orally for centuries before being written down.

The marimba originated in Africa and was brought to Latin America during the slave trade.

High jumpers use the Fosbury Flop — jumping backwards over the bar — introduced by Dick Fosbury at the 1968 Olympics.