1) Honey never spoils. Archaeologists have found pots of honey in ancient Egyptian tombs that are over 3,000 years old and still perfectly edible.

2) The Great Wall of China is not visible from space without aid, contrary to popular belief.

3) The ozone layer, located in the Earth's stratosphere, protects us from harmful ultraviolet (UV) radiation.

4) The word "banana" contains three vowels: A, A, and A.