1) The #MeToo movement, originating in 2006 and gaining widespread attention in 2017, raised awareness about sexual harassment and assault, encouraging survivors to share their experiences and promoting discussions on consent and gender equality.

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

3) The world's first paper money was created in China over 1,000 years ago.

4) Bats are the only mammals capable of sustained flight.