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KUSA - It's not uncommon for Steve Spangler to want to launch a rocket at 9NEWS, but on Thursday, he wanted to do it indoors.

It's a science lesson in the chemistry of ethanol, and Spangler joined 9NEWS' Jack Maher who is wearing one of his many flame-retardant outfits.

(KUSA-TV © 2014 Multimedia Holdings Corporation)

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