My friend and former colleague James Gaines, who previously explained how capsaicin works while eating a handful of chili peppers, worked on this SciShow video about tear gas. James is a great science writer who knows how to break down complicated science into bite-sized tidbits, and that skill is on display here — even if the subject matter is pretty harrowing.
How does tear gas actually work?

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- pepper spray
- riot cops
- Tear gas
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