Spangler Science: What makes hand warmers work?

There's nothing like a good hand warmer in your glove when you're skiing. But how do they work?

KUSA - There’s nothing like a good hand warmer in your glove when you’re skiing. But how do they work?

Our science guy Steve Spangler uncovers the science secret that makes your hand warmer work. 

Watch the video above to learn more about those hand warmers we love in the winter! 

© 2017 KUSA-TV


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