Well, here's my facts and trivias to share: 1. why does chopping onions make your eyes water? its not the smell. the knife breaks open the onion's cells, letting out enzymes that react with other substances from the broken cells. a gas is formed which reacts with water on the surface of your eyes forming a mild sulfuric acid. irritation is detected by the eye's nerve endings. the brain then signals the tear ducts to produce water to clean the eyes. 2. what country lies inside another country? vatican city. although it has the word "city" in its name, it really is a country that lies inside rome, which is the capital of italy. with less than 1000 people, it is also the smallest nation in terms of population. thats it!