1) The concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.

2) The human body contains enough carbon to make over 9,000 pencils.

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 shortest war in history lasted only 38 to 45 minutes between Britain and Zanzibar in 1896.