#89 How does the Large Hadron Collider work?
I learned this today. The Large Hadron Collider accelerates particles to close to the speed of light by using electric fields and […]
#88 Why is Venice where it is?
I learned this today. Venice was built on 118 small islands in a marshy lagoon because the people from local Roman cities […]
#87 How do stars die?
I learned this today. Stars die because they exhaust all of their fuel. There are seven different types of star. They are […]
#86 When did people start using aircraft carriers?
I learned this today. On November 14th, 1910, Eugene Ely flew a plane off a ship, technically making that ship the first […]
#85 When did people start using money?
The first ever money was the Mesopotamian shekel, used about 5,000 years ago. Before we had money, people used the bartering system. […]
#84 Why is London where it is?
I learned this today. London was built where it is because it is the closest point to the sea that could be […]
#83 How does a quartz watch work?
I learned this today. Quartz watches are far more precise than mechanical clocks because they make quartz crystals oscillate at a very […]
#82 Why is skin waterproof?
I learned this today. Our skin can allow sweat out, but it doesn’t let water in thanks to a thin layer of […]
#81 Why do whales make sounds?
I learned this today. Whales make use of sound in the water because they cannot use their other senses. It is not […]
#80 Why do we say Middle Ages and Dark Ages?
I learned this today. The Middle Ages and the Dark Ages both refer to Europe between the Fall of Rome in 476 […]