1) The signing of the Magna Carta in 1215 laid the foundation for modern democratic principles and limited the powers of the monarchy in England.

2) The human body contains enough carbon to make over 9,000 pencils.

3) The word "oxygen" contains two vowels: O and E.

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