There are some small things we take for granted now that used to be some of the most amazing inventions ever.
When the hair dryer was first invented, it was this giant tube standing up from the floor that you stuck hair in, and it was powered by diesel fuel to produce heat, like a semi truck!
Or the stove, those weren’t invented in Europe until about 500 years ago. That seems like a long time, but China invented the iron stove 2,250 years ago!
Even the water heater in your house was a crazy invention at one time, which you can learn about: