Add some extra cheer to your campfire or wood-burning fireplace by tossing in a few of these pinecones. They burn in all the colors of the rainbow using readily-available chemicals. Treated pinecones are easy-to-make holiday gifts, too.Add some extra cheer to your campfire or wood-burning fireplace by tossing in a few of these pinecones. They burn in all the colors of the rainbow using readily-available chemicals. Treated pinecones are easy-to-make holiday gifts, too.Explore Chemistry
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