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How Do Popcorn Kernels Pop?

But Why: A Podcast for Curious Kids

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The Science and History of Zippers

This chapter explores the mechanics and components of zippers, using relatable analogies to explain their function. It also highlights the historical significance of zippers, including their use in NASA's spacesuits, and features an inspiring overview of legendary runners like Usain Bolt and Florence Griffith Joyner.

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