You use these things every day, and they seem plain and clear, but it turns out, a lot of them are hiding secrets you'd never guess about. Holes or "eyes" in cheese are made by bacteria used in the process of production. Glass breaks so easily because its atoms are arranged rather loosely and randomly. Tree rings can not only tell you how old a tree is but also how the weather has been changing during its lifetime. Chip bags have excess air inside to cushion chips during shipping and prevent them from getting crushed.

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