1) The Olympic motto is "Citius, Altius, Fortius," which is Latin for "Faster, Higher, Stronger."

2) The development of blockchain technology, first introduced in 2008 with the creation of Bitcoin, has enabled secure and decentralized digital transactions and led to the emergence of cryptocurrencies.

3) The United Nations Security Council is responsible for maintaining international peace and security, with five permanent members (China, France, Russia, the United Kingdom, and the United States) holding veto power over resolutions.

4) Mount Kilimanjaro in Tanzania is the highest mountain in Africa and attracts climbers from around the world.