I can't vouch for this one like I cuold for the history one, but it's still somewhat amusing even if fake. Most were from 5th and 6th graders.
Vacuums are nothings.
We only mention them to let them know we know they're there. Some oxygen molecules help fires burn while others help make water, so sometimes it's brother against brother. We say the cause of perfume disappearing is evaporation. Evaporation gets blamed for a lot of things people forget to put the top on. To most people solutions mean finding the answers.