The phrase 'OK' is the most widely understood expression in the world — its origin is debated.

Abstract art didn't begin with Picasso — Wassily Kandinsky is generally credited as the first to paint purely abstract works around 1910.

The informal economy in developing countries often employs more people than the formal sector.

The NFL Super Bowl is consistently one of the most-watched annual sporting events in the United States.

The oldest known musical instruments are bone flutes found in Germany dating to at least 40,000 years ago.

The Greek god Hermes was the patron of thieves, travelers, messengers, and boundaries — a trickster deity.

The vuvuzela, an African horn, produces sound at about 127 decibels — louder than a chainsaw.

During his entire lifetime, Vincent Van Gogh is known to have sold only a single painting.

Bob Dylan was awarded the Nobel Prize in Literature in 2016 — a first for a songwriter.