1) The insurance industry employs a wide range of professionals, including underwriters, actuaries, claims adjusters, and insurance agents.

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

3) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

4) The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, reaching a depth of approximately 36,070 feet (10,994 meters).