1) The ocean is home to an incredible variety of marine life, including thousands of species of fish, mammals, reptiles, and invertebrates.

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

3) The most intense cyclone ever recorded was Cyclone Tip in 1979, with a minimum central pressure of 870 millibars and maximum sustained winds of 190 miles per hour (305 kilometers per hour).

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