Ever wondered how fireflies light up? Ever wonder why Americans drive on the right side of the road? Ever wondered why the sky is blue? Wonder no more as Phil and Campbell Valentine answer some of the questions we've all wondered about.

Let's face it. There are some things that we've all wondered about but were just too lazy to look up. Phil Valentine and Campbell Valentine do just that. Everything from why the sky's blue to why your fingers wrinkle when they're wet.

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Selected references:

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• How and why do fireflies light up?
   

• Why they don't have fireflies in the Northwest
   

• Why is the sky blue?
   

• Why fingers and toes prune up in water
   

• What do AM and PM stand for?
   

• Why male cardinals are bright red and the females are not
   

• Why we yawn
   

• Why we laugh
   

• How we thought bicycles stay up is debunked
   

• Why we Americans drive on the right side of the road