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

2) The fingerprints of koalas are so similar to humans that they have been mistaken at crime scenes.

3) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.

4) The first commercial mobile phone, the Motorola DynaTAC 8000X, was released in 1983 and weighed nearly 2 pounds.