SciShow

How Onions ACTUALLY Make You Cry (And How to Stop Them)

2026 • E78    May 20, 2026    5m
Scientists had figured out the biology and chemistry of how onions make you cry. But there was one thing they left out: Physics. Using an onion guillotine, they have finally solved the puzzle.

Hosted by: Hank Green (he/him)

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