1) The Black Lives Matter movement, which gained prominence in 2013, advocates for racial justice and equality, addressing systemic racism and police violence against Black individuals.

2) 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.

3) The first car with air conditioning was released in 1939.

4) The world's largest ocean, the Pacific Ocean, covers an area of approximately 63 million square miles.