Rainbows are made up of seven colors. Interestingly enough, if you look for the end of a rainbow, you’ll never find it because rainbows are actually complete circles! What we perceive is usually viewed from the ground, so it appears as an upside down letter U!

Jenga may sound like a made up word, but it's not! It actually comes from the Swahili word 'kujenga' which means 'to build'! The name was chosen because the game has its origins in Africa and because the whole point of the game is to continue building an ever more precarious tower from wooden blocks.

The earliest microscopes were called flea glasses because they were predominantly used to observe small insects such as fleas! These microscopes were simple in construction, using different shapes and sizes of glass with low power (6x to 10x). They were invented by the Romans.