Adele's album '21' is the best-selling album of the 21st century with over 31 million copies sold.

Rowing is considered one of the most physically demanding Olympic sports, requiring near-maximal effort for about 6 minutes.

Mozart began composing music at age five.

Arguments about money are among the most common relationship disagreements.

About 65% of people prefer texting over talking on the phone.

Opera was invented in Florence around 1600, originally as an attempt to recreate ancient Greek theater.

The word 'OK' is likely the most widely understood word on Earth.

You are more likely to meet someone with your exact birthday than you expect.

Judaism is one of the oldest monotheistic religions, with roots going back over 4,000 years.