1) The Great Barrier Reef in Australia is the largest coral reef system in the world and is visible from space.

2) The Earth's core is hotter than the surface of the Sun.

3) The United States recently held its presidential election in 2020, resulting in Joe Biden being elected as the 46th President of the United States and Kamala Harris as the Vice President, making history as the first female Vice President.

4) The Indian Ocean is the third-largest ocean and is characterized by its warm waters and diverse marine life.