American Public Media · Education

Moment of Um

Moment of Um is your daily answer to those questions that pop up out of nowhere and make you go… ummmmmmm. Brought to you by your friends at Brains On at APM Studios.

Episodes

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Moment of Um

Episodes

Why are there holes in Swiss cheese?

How do ping-pong balls bounce so high?

How does gasoline turn into exhaust?

What happens in our bodies when we are sick?

Why do some trees grow taller than others?

Why are peaches and some other fruits fuzzy?

How were black holes first discovered?

How do records work?

Do airplanes have a speed limit?

How do stethoscopes work?

How many times does our heart beat a day?

How do sinkholes form?

What would happen if I went inside a black hole?

How do 3D glasses work?

How do vocal cords work?

How does hair dye work?

How are bricks made?

When did people start using utensils?

How do our clothes get dirty?

Why does salt make you thirsty?