1) The world's longest traffic jam occurred in China in 2010 and lasted for 12 days, stretching over 60 miles (97 km).

2) The universe is estimated to be around 13.8 billion years old.

3) The first commercially successful video game was "Pong," released in 1972 by Atari.

4) The Dow Jones Industrial Average (DJIA) is a stock market index that tracks the performance of 30 large, publicly owned companies in the United States.