More an ancient tool than a groundbreaking gadget, the fire piston relies on basic chemistry to ignite a campfire with the simple pump of a hand. The new Aviator's Ember from Aerohart applies ...
At first, they thought both fires were caused by spontaneous combustion, but it turns out just one of them was. PFA Chief Gene Maccarini said these occurrences are really rare, but can happen easily.
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