1) The word "yesterday" contains three vowels: E, A, and A.

2) The Cricket World Cup is held every four years and features teams from around the world competing for the prestigious title.

3) The Northern Lights, also known as the Aurora Borealis, are natural light displays that occur in the polar regions due to interactions between the Earth's magnetic field and solar particles.

4) 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.