I’m excited to announce that my latest book, Accidental Archaeologists: True Stories of Unexpected Discoveries, has been chosen as a Junior Library Guild selection!
In 1905, a schoolteacher invented the flyswatter by attaching a square piece of screen to the end of a yardstick. The holes made it effective, because flies can sense the air current from a solid object coming at them (such as a rolled up newspaper).
source: The Kid Who Invented the Popsicle by Don L. Wulffson