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

2) The ancient city of Rome was founded in 753 BC and went on to become one of the most powerful and influential civilizations in history.

3) The Beatles hold the record for the most number-one hits on the Billboard Hot 100 chart, with 20 songs reaching the top spot.

4) The word "chocolate" contains four vowels: O, O, A, and E.