"Nitro Joe" out of St. Louis covers the Midwest, teaching youngsters about science in a fun way. Nitro Joe uses air pressure to crush objects and move things around, teaching youngsters about science in a way that makes learning fun..

Pictures by Mike Fak

Louella Moreland reminds students there's only one more week for the summer reading program.

Nitro Joe explains air to the youngsters.

Joe explained the bag rose in the air because it was less dense than the air around it.

Attentive but disappointed they weren't picked to help.

The floor of the library was filled for the show.

You know there is air, but you can't see it.

Everyone wanted to volunteer.

Blowing out candles with a homemade "airzooka."

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