1) 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).

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

3) The fingerprints of koalas are so similar to humans that they have been mistaken at crime scenes.

4) The Russian Revolution in 1917 resulted in the overthrow of the monarchy and the establishment of a communist government under Vladimir Lenin.