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4th of July Cool Science Experiment - Colored Smoke Rings

I'll have to admit that my Trash Can Smoke Rings routine is not only a signature staple in my stage show, but it's become one of my all-time favorite science demos to perform. After presenting my smoke ring routine on the Ellen Show, I received…
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Liquid Nitrogen Explosions - Flying Trash Cans Prompt Visitors

They say practice makes perfect. So, we were practicing for an upcoming live performance by setting off liquid nitrogen trash can explosions in our parking lot... and a few visitors showed up. We might have upset our neighbors. Let's start…