1) Mount Everest, located in the Himalayas, is the highest mountain on Earth, reaching a peak elevation of 29,032 feet (8,848 meters).

2) The hibiscus flower is commonly associated with tropical regions and is the national flower of several countries, including Malaysia, South Korea, and Haiti.

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

4) The world's first credit card was introduced in 1950 by Diners Club.