1) 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.

2) Meryl Streep is an American actress widely regarded as one of the greatest performers in the history of cinema. She has received a record number of Academy Award nominations and has won several awards for her roles in films such as "The Devil Wears Prada" and "Sophie's Choice."

3) The concept of reinsurance, which is insurance for insurance companies, originated in the 17th century.

4) The smallest unit of time is known as a zeptosecond, which is equal to one trillionth of one billionth of a second.