1) The Tour de France, first held in 1903, is one of the most prestigious and grueling cycling races, covering over 3,500 kilometers (2,200 miles) in three weeks.

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 concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.

4) The word "school" contains two vowels: O and O.