The Mystery of the Shrinking Worker

The first pencil eraser was attached to a pencil in 1858 by Hyman Lipman, who patented the idea.

A candle's flame melts the wax, which is then drawn up the wick to fuel the fire, making the candle shorter over time.

The world's largest bar of soap weighed over 2,500 pounds and was created in the UK in 2018.

Darkness is the absence of light, and you can't measure it directly — the more you have, the less you see.