1) The blue whale is the largest animal to have ever existed, with an average length of about 82 feet (25 meters).

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

3) The world's first speeding ticket was issued in 1902 to a motorist who was driving at the astonishing speed of 45 miles per hour (72 km/h).

4) The smallest unit of time is known as a zeptosecond, which is equal to one trillionth of one billionth of a second.