TellMeWhy

A wonderful and marvelous collection of answers to intriguing questions everyone ask about the world covering almost every subject, from science and history to art, language, mathematics, technology, and homeschooling

why do birds migrate
TellMeWhy

Why Do Birds Migrate?

There is more than one single reason for birds to migrate, but it all comes down to survival. For all birds, one of the principle driving fo

why does a blimp rise
TellMeWhy

Why Does a Blimp Rise?

A blimp rise as because it is filled with a gas that is lighter than the air around it. A blimp rise also depends on the pressure of the gas

why do pigs wallow in mud
TellMeWhy

Why Do Pigs Wallow in Mud?

Pigs wallow in the mud because it feels good to them. Rolling around in the mud protects them from overheating. Pigs have no sweat glands in

why do sidewalks have cracks
TellMeWhy

Why Do Sidewalks Have Cracks?

To prevent sidewalks from cracking in random spots and breaking apart, special cracks, or grooves are scraped into the concrete when a sidew