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

2) The recent increase in cyber attacks, including ransomware attacks targeting critical infrastructure, businesses, and individuals, has highlighted the importance of cybersecurity measures and the need for enhanced protection against evolving threats.

3) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.

4) The New York Stock Exchange (NYSE) is the largest stock exchange in the world.