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

2) The world's largest volcano, Mauna Loa in Hawaii, is also one of the most active.

3) The game of basketball was invented by Dr. James Naismith in 1891 and has since grown into a global sport played at both amateur and professional levels.

4) The most-watched TV series finale in the United States was "MAS*H," with an estimated 105 million viewers.