It was a weapon of choice in the first World War, and these days, law enforcement uses a less potent recipe of tear gas to pacify a room or control a crowd. Discover what’s inside the sensory-attacking irritant that can be deadly if used at high concentrations.

Still haven’t subscribed to WIRED on YouTube? ►► http://wrd.cm/15fP7B7
Get more incredible stories on science and tech with our daily newsletter: https://wrd.cm/DailyYT

Also, check out the free WIRED channel on Roku, Apple TV, Amazon Fire TV, and Android TV. Here you can find your favorite WIRED shows and new episodes of our latest hit series Tradecraft.

ABOUT WIRED
WIRED is where tomorrow is realized. Through thought-provoking stories and videos, WIRED explores the future of business, innovation, and culture.

What’s Inside A Can of Tear Gas | WIRED