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

2) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.

3) The world's first car radio was invented in 1929.

4) 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).