1) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.

2) The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, reaching a depth of approximately 36,070 feet (10,994 meters).

3) The Dead Sea, located between Jordan and Israel, is the lowest point on Earth's surface. Its saltwater is so dense that people can easily float on its surface.

4) The sitcom "Friends" is known for its iconic Central Perk coffee shop, where the main characters often gather.