43. Technetium: Naturally Synthetic

It’s only after we gave up searching for this element that we found it out in the universe.

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33. Arsenic: It’s Not Easy Being Green

Considering how synonymous this episode’s element is with “poison,” it’s astounding how eager people have historically been to ingest the stuff.

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30. Zinc: The Lecture Circuit

Learn about some of Italy’s most renowned chemists and how they inspired a most gruesome quest to conquer death.

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20. Calcium: Stone and Bone

Stories of turning flesh to stone — and vice versa — are common in mythology. With calcium, we see how those same transitions can happen in the real world.

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