It was American astronomer and author Carl Sagan who said, "there is no such thing as a dumb question," and that's the idea behind Monty's Book Of Why.
You wonder, you ask, and we find an answer for you.
A KMPH viewer wrote in to ask, "Why are school buses yellow?"
It turns out, there is a very good reason for that and it all started nearly 75 years ago with a nationwide survey of experts.
"They started out yellow in 1939," says Fresno Unified School District's Transportation Manager, Reggie Ruben.
"A doctor from a university, Dr. Frank Cyr, he formulated a group in New York and they came up with people in transportation in 48 states to come up with a school bus color, which they came up with national school bus yellow."
They chose that color, Ruben says, for a very good reason.
"The reason they picked that color is because it was more visible during the early morning hours when we travel to schools. With the black letters it made it highly visible. With some cases as far as weather, things of that nature, people can see the yellow colors."
And it was such a good idea, and color, Ruben says, that you can now see it on every school bus from coast to coast.
"Throughout the country. That's why it's "National School Bus Yellow. That's the name of the color."
So now you know.
If you have one of those nagging questions for which you would like us to help you find an answer, include the title "Monty's Book Of Why" and send me your question.
You can e-mail it to: email@example.com, or post it onto our KMPH Fox 26 facebook page.